956720997 has 16 divisors (see below), whose sum is σ = 1434444480. Its totient is φ = 630128016.

The previous prime is 956720983. The next prime is 956721023. The reversal of 956720997 is 799027659.

956720997 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 956720997 - 2²⁸ = 688285541 is a prime.

It is a super-2 number, since 2×956720997² = 1830630132201348018, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (956720497) 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, 211218 + ... + 215699.

It is an arithmetic number, because the mean of its divisors is an integer number (89652780).

Almost surely, 2^956720997 is an apocalyptic number.

It is an amenable number.

956720997 is a deficient number, since it is larger than the sum of its proper divisors (477723483).

956720997 is a wasteful number, since it uses less digits than its factorization.

956720997 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 427009 (or 427003 counting only the distinct ones).

The product of its (nonzero) digits is 2143260, while the sum is 54.

The square root of 956720997 is about 30930.9068247279. The cubic root of 956720997 is about 985.3603934303.

The spelling of 956720997 in words is "nine hundred fifty-six million, seven hundred twenty thousand, nine hundred ninety-seven".