690120972 has 48 divisors (see below), whose sum is σ = 1811314400. Its totient is φ = 230037408.

The previous prime is 690120919. The next prime is 690120997. The reversal of 690120972 is 279021096.

It is a super-4 number, since 4×690120972⁴ (a number of 36 digits) contains 4444 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 30697 + ... + 48192.

Almost surely, 2^690120972 is an apocalyptic number.

It is an amenable number.

690120972 is an abundant number, since it is smaller than the sum of its proper divisors (1121193428).

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

690120972 is an equidigital number, since it uses as much as digits as its factorization.

690120972 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 78914 (or 78894 counting only the distinct ones).

The product of its (nonzero) digits is 13608, while the sum is 36.

The square root of 690120972 is about 26270.1536348762. The cubic root of 690120972 is about 883.7072305678.

The spelling of 690120972 in words is "six hundred ninety million, one hundred twenty thousand, nine hundred seventy-two".