690655632 has 40 divisors (see below), whose sum is σ = 1791168096. Its totient is φ = 229318656.

The previous prime is 690655627. The next prime is 690655649. The reversal of 690655632 is 236556096.

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 7 ways as a sum of consecutive naturals, for example, 15658 + ... + 40329.

Almost surely, 2^690655632 is an apocalyptic number.

It is an amenable number.

690655632 is an abundant number, since it is smaller than the sum of its proper divisors (1100512464).

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

690655632 is a wasteful number, since it uses less digits than its factorization.

690655632 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56255 (or 56249 counting only the distinct ones).

The product of its (nonzero) digits is 291600, while the sum is 42.

The square root of 690655632 is about 26280.3278518362. The cubic root of 690655632 is about 883.9353842603.

The spelling of 690655632 in words is "six hundred ninety million, six hundred fifty-five thousand, six hundred thirty-two".