690467568831 has 48 divisors (see below), whose sum is σ = 1080481413024. Its totient is φ = 423305644032.

The previous prime is 690467568829. The next prime is 690467568841. The reversal of 690467568831 is 138865764096.

690467568831 is a `hidden beast` number, since 6 + 9 + 0 + 4 + 67 + 568 + 8 + 3 + 1 = 666.

It is not a de Polignac number, because 690467568831 - 2¹ = 690467568829 is a prime.

It is a super-2 number, since 2×690467568831² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (690467568841) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 906205 + ... + 1483961.

It is an arithmetic number, because the mean of its divisors is an integer number (22510029438).

Almost surely, 2^690467568831 is an apocalyptic number.

690467568831 is a deficient number, since it is larger than the sum of its proper divisors (390013844193).

690467568831 is a wasteful number, since it uses less digits than its factorization.

690467568831 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 577960 (or 577957 counting only the distinct ones).

The product of its (nonzero) digits is 52254720, while the sum is 63.

The spelling of 690467568831 in words is "six hundred ninety billion, four hundred sixty-seven million, five hundred sixty-eight thousand, eight hundred thirty-one".