690684652 has 12 divisors (see below), whose sum is σ = 1381369360. Its totient is φ = 296007696.

The previous prime is 690684649. The next prime is 690684667. The reversal of 690684652 is 256486096.

690684652 is an admirable number.

It is a super-2 number, since 2×690684652² = 954090577016722208, which contains 22 as substring.

It is a hoax number, since the sum of its digits (46) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12333627 + ... + 12333682.

Almost surely, 2^690684652 is an apocalyptic number.

It is an amenable number.

690684652 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

690684652 is a wasteful number, since it uses less digits than its factorization.

690684652 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24667320 (or 24667318 counting only the distinct ones).

The product of its (nonzero) digits is 622080, while the sum is 46.

The square root of 690684652 is about 26280.8799700467. The cubic root of 690684652 is about 883.9477644994.

The spelling of 690684652 in words is "six hundred ninety million, six hundred eighty-four thousand, six hundred fifty-two".