869056731 has 12 divisors (see below), whose sum is σ = 1258536240. Its totient is φ = 577879440.

The previous prime is 869056693. The next prime is 869056757. The reversal of 869056731 is 137650968.

It is a happy number.

869056731 is a `hidden beast` number, since 86 + 9 + 0 + 567 + 3 + 1 = 666.

It is not a de Polignac number, because 869056731 - 2⁶ = 869056667 is a prime.

It is a super-2 number, since 2×869056731² = 1510519203392812722, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (869056781) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 120615 + ... + 127616.

It is an arithmetic number, because the mean of its divisors is an integer number (104878020).

Almost surely, 2^869056731 is an apocalyptic number.

869056731 is a deficient number, since it is larger than the sum of its proper divisors (389479509).

869056731 is a wasteful number, since it uses less digits than its factorization.

869056731 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 248626 (or 248623 counting only the distinct ones).

The product of its (nonzero) digits is 272160, while the sum is 45.

The square root of 869056731 is about 29479.7681639459. The cubic root of 869056731 is about 954.2951336910.

It can be divided in two parts, 86905 and 6731, that added together give a square (93636 = 306²).

The spelling of 869056731 in words is "eight hundred sixty-nine million, fifty-six thousand, seven hundred thirty-one".