684677331 has 48 divisors (see below), whose sum is σ = 1125196800. Its totient is φ = 397711296.

The previous prime is 684677311. The next prime is 684677333. The reversal of 684677331 is 133776486.

It is not a de Polignac number, because 684677331 - 2⁵ = 684677299 is a prime.

It is a super-2 number, since 2×684677331² = 937566095170567122, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (684677333) 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, 1064496 + ... + 1065138.

It is an arithmetic number, because the mean of its divisors is an integer number (23441600).

Almost surely, 2^684677331 is an apocalyptic number.

684677331 is a deficient number, since it is larger than the sum of its proper divisors (440519469).

684677331 is a wasteful number, since it uses less digits than its factorization.

684677331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1160 (or 1157 counting only the distinct ones).

The product of its digits is 508032, while the sum is 45.

The square root of 684677331 is about 26166.3396561307. The cubic root of 684677331 is about 881.3775476167.

The spelling of 684677331 in words is "six hundred eighty-four million, six hundred seventy-seven thousand, three hundred thirty-one".