690231204 has 72 divisors (see below), whose sum is σ = 1943792760. Its totient is φ = 205051392.

The previous prime is 690231193. The next prime is 690231211. The reversal of 690231204 is 402132096.

It can be written as a sum of positive squares in 4 ways, for example, as 3686400 + 686544804 = 1920^2 + 26202^2 .

It is a super-2 number, since 2×690231204² = 952838229950579232, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 11857 + ... + 39000.

Almost surely, 2^690231204 is an apocalyptic number.

It is an amenable number.

690231204 is an abundant number, since it is smaller than the sum of its proper divisors (1253561556).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

690231204 is a wasteful number, since it uses less digits than its factorization.

690231204 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50909 (or 50904 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 27.

The square root of 690231204 is about 26272.2515974554. The cubic root of 690231204 is about 883.7542791449.

The spelling of 690231204 in words is "six hundred ninety million, two hundred thirty-one thousand, two hundred four".