Number of the day: 670097

Properties of the number 670097:

670097 is a cyclic number.
670097 and 670099 form a twin prime pair.
670097 has 9 antidivisors and 670096 totatives.
670097 has a prime digit sum 29 in base 10.
670097 = 335049² - 335048² is the difference of 2 nonnegative squares in 1 way.
670097 is the difference of 2 positive pentagonal numbers in 1 way.
670097 = 191² + 796² is the sum of 2 positive squares in 1 way.
670097 = 4² + 65² + 816² is the sum of 3 positive squares.
670097² = 304072² + 597135² is the sum of 2 positive squares in 1 way.
670097² is the sum of 3 positive squares.
670097 is a proper divisor of 911¹²⁴ - 1.
670097 = '6' + '70097' is the concatenation of 2 semiprime numbers.
670097 is an emirp in (at least) the following bases: 7, 15, 19, 45, 58, 79, 84, 86, 95, and 97.

The number 670097 belongs to the following On-Line Encyclopedia of Integer Sequences (OEIS) sequence (among others):

Sequence number and description below are taken from OEIS.
A104962: Primes from merging of 6 successive digits in decimal expansion of cos(1).