690012672 has 40 divisors (see below), whose sum is σ = 1838240976. Its totient is φ = 230003712.

The previous prime is 690012649. The next prime is 690012679. The reversal of 690012672 is 276210096.

It is a super-2 number, since 2×690012672² = 952234975041159168, which contains 22 as substring.

It is a hoax number, since the sum of its digits (33) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (690012679) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 223078 + ... + 226149.

Almost surely, 2^690012672 is an apocalyptic number.

It is an amenable number.

690012672 is an abundant number, since it is smaller than the sum of its proper divisors (1148228304).

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

690012672 is an equidigital number, since it uses as much as digits as its factorization.

690012672 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 449248 (or 449232 counting only the distinct ones).

The product of its (nonzero) digits is 9072, while the sum is 33.

The square root of 690012672 is about 26268.0922794176. The cubic root of 690012672 is about 883.6610017163.

The spelling of 690012672 in words is "six hundred ninety million, twelve thousand, six hundred seventy-two".