690787932 has 12 divisors (see below), whose sum is σ = 1611838536. Its totient is φ = 230262640.

The previous prime is 690787931. The next prime is 690787939. The reversal of 690787932 is 239787096.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (690787931) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 28782819 + ... + 28782842.

It is an arithmetic number, because the mean of its divisors is an integer number (134319878).

Almost surely, 2^690787932 is an apocalyptic number.

It is an amenable number.

690787932 is an abundant number, since it is smaller than the sum of its proper divisors (921050604).

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

690787932 is a wasteful number, since it uses less digits than its factorization.

690787932 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57565668 (or 57565666 counting only the distinct ones).

The product of its (nonzero) digits is 1143072, while the sum is 51.

The square root of 690787932 is about 26282.8448231922. The cubic root of 690787932 is about 883.9918220274.

The spelling of 690787932 in words is "six hundred ninety million, seven hundred eighty-seven thousand, nine hundred thirty-two".