690936972 has 48 divisors (see below), whose sum is σ = 1760892672. Its totient is φ = 209119680.

The previous prime is 690936947. The next prime is 690936973. The reversal of 690936972 is 279639096.

690936972 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (690936973) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 124938 + ... + 130350.

It is an arithmetic number, because the mean of its divisors is an integer number (36685264).

Almost surely, 2^690936972 is an apocalyptic number.

It is an amenable number.

690936972 is an abundant number, since it is smaller than the sum of its proper divisors (1069955700).

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

690936972 is a wasteful number, since it uses less digits than its factorization.

690936972 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6398 (or 6396 counting only the distinct ones).

The product of its (nonzero) digits is 1102248, while the sum is 51.

The square root of 690936972 is about 26285.6799797913. The cubic root of 690936972 is about 884.0553922689.

The spelling of 690936972 in words is "six hundred ninety million, nine hundred thirty-six thousand, nine hundred seventy-two".