690997492992 has 36 divisors (see below), whose sum is σ = 1839061038080. Its totient is φ = 230332497408.

The previous prime is 690997492987. The next prime is 690997493009. The reversal of 690997492992 is 299294799096.

It is a super-2 number, since 2×690997492992² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 449867392 + ... + 449868927.

Almost surely, 2^690997492992 is an apocalyptic number.

It is an amenable number.

690997492992 is an abundant number, since it is smaller than the sum of its proper divisors (1148063545088).

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

690997492992 is an equidigital number, since it uses as much as digits as its factorization.

690997492992 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 899736338 (or 899736324 counting only the distinct ones).

The product of its (nonzero) digits is 357128352, while the sum is 75.

The spelling of 690997492992 in words is "six hundred ninety billion, nine hundred ninety-seven million, four hundred ninety-two thousand, nine hundred ninety-two".