697610331 has 48 divisors (see below), whose sum is σ = 1128591360. Its totient is φ = 411615360.

The previous prime is 697610311. The next prime is 697610339. The reversal of 697610331 is 133016796.

697610331 is a `hidden beast` number, since 6 + 9 + 7 + 610 + 3 + 31 = 666.

It is not a de Polignac number, because 697610331 - 2¹⁵ = 697577563 is a prime.

It is a super-2 number, since 2×697610331² = 973320347835859122, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (697610339) 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, 1456150 + ... + 1456628.

It is an arithmetic number, because the mean of its divisors is an integer number (23512320).

Almost surely, 2^697610331 is an apocalyptic number.

697610331 is a deficient number, since it is larger than the sum of its proper divisors (430981029).

697610331 is a wasteful number, since it uses less digits than its factorization.

697610331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 856 (or 853 counting only the distinct ones).

The product of its (nonzero) digits is 20412, while the sum is 36.

The square root of 697610331 is about 26412.3140031312. The cubic root of 697610331 is about 886.8924704427.

The spelling of 697610331 in words is "six hundred ninety-seven million, six hundred ten thousand, three hundred thirty-one".