715873397 has 2 divisors, whose sum is σ = 715873398. Its totient is φ = 715873396.

The previous prime is 715873387. The next prime is 715873409. The reversal of 715873397 is 793378517.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 424112836 + 291760561 = 20594^2 + 17081^2 .

It is an emirp because it is prime and its reverse (793378517) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 715873397 - 2²² = 711679093 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (715873357) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 357936698 + 357936699.

It is an arithmetic number, because the mean of its divisors is an integer number (357936699).

Almost surely, 2^715873397 is an apocalyptic number.

It is an amenable number.

715873397 is a deficient number, since it is larger than the sum of its proper divisors (1).

715873397 is an equidigital number, since it uses as much as digits as its factorization.

715873397 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1111320, while the sum is 50.

The square root of 715873397 is about 26755.8105278087. The cubic root of 715873397 is about 894.5653547398.

The spelling of 715873397 in words is "seven hundred fifteen million, eight hundred seventy-three thousand, three hundred ninety-seven".