690879488 has 44 divisors (see below), whose sum is σ = 1487350200. Its totient is φ = 318861312.

The previous prime is 690879437. The next prime is 690879517. The reversal of 690879488 is 884978096.

It is a congruent number.

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, 12638 + ... + 39261.

Almost surely, 2^690879488 is an apocalyptic number.

It is an amenable number.

690879488 is an abundant number, since it is smaller than the sum of its proper divisors (796470712).

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

690879488 is a wasteful number, since it uses less digits than its factorization.

690879488 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51932 (or 51914 counting only the distinct ones).

The product of its (nonzero) digits is 6967296, while the sum is 59.

The square root of 690879488 is about 26284.5865099682. The cubic root of 690879488 is about 884.0308746204.

The spelling of 690879488 in words is "six hundred ninety million, eight hundred seventy-nine thousand, four hundred eighty-eight".