15696697 has 2 divisors, whose sum is σ = 15696698. Its totient is φ = 15696696.

The previous prime is 15696691. The next prime is 15696701. The reversal of 15696697 is 79669651.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 12752041 + 2944656 = 3571^2 + 1716^2 .

It is a cyclic number.

It is not a de Polignac number, because 15696697 - 2¹⁵ = 15663929 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 15696697.

It is not a weakly prime, because it can be changed into another prime (15696691) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7848348 + 7848349.

It is an arithmetic number, because the mean of its divisors is an integer number (7848349).

Almost surely, 2^15696697 is an apocalyptic number.

It is an amenable number.

15696697 is a deficient number, since it is larger than the sum of its proper divisors (1).

15696697 is an equidigital number, since it uses as much as digits as its factorization.

15696697 is an evil number, because the sum of its binary digits is even.

The product of its digits is 612360, while the sum is 49.

The square root of 15696697 is about 3961.9057283080. The cubic root of 15696697 is about 250.3818006163.

The spelling of 15696697 in words is "fifteen million, six hundred ninety-six thousand, six hundred ninety-seven".