15797631 has 16 divisors (see below), whose sum is σ = 22335488. Its totient is φ = 9914400.

The previous prime is 15797609. The next prime is 15797647. The reversal of 15797631 is 13679751.

It is not a de Polignac number, because 15797631 - 2⁷ = 15797503 is a prime.

It is a super-2 number, since 2×15797631² = 499130290424322, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 15797631.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15797671) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1146 + ... + 5736.

It is an arithmetic number, because the mean of its divisors is an integer number (1395968).

Almost surely, 2^15797631 is an apocalyptic number.

15797631 is a deficient number, since it is larger than the sum of its proper divisors (6537857).

15797631 is a wasteful number, since it uses less digits than its factorization.

15797631 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4662.

The product of its digits is 39690, while the sum is 39.

The square root of 15797631 is about 3974.6233783844. The cubic root of 15797631 is about 250.9173285828.

The spelling of 15797631 in words is "fifteen million, seven hundred ninety-seven thousand, six hundred thirty-one".