690511232 has 32 divisors (see below), whose sum is σ = 1388511720. Its totient is φ = 342022144.

The previous prime is 690511223. The next prime is 690511259. The reversal of 690511232 is 232115096.

It is a tau number, because it is divible by the number of its divisors (32).

It is a junction number, because it is equal to n+sod(n) for n = 690511195 and 690511204.

It is a congruent number.

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 3 ways as a sum of consecutive naturals, for example, 11513 + ... + 38904.

Almost surely, 2^690511232 is an apocalyptic number.

It is an amenable number.

690511232 is an abundant number, since it is smaller than the sum of its proper divisors (698000488).

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

690511232 is a wasteful number, since it uses less digits than its factorization.

690511232 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50538 (or 50526 counting only the distinct ones).

The product of its (nonzero) digits is 3240, while the sum is 29.

The square root of 690511232 is about 26277.5804061181. The cubic root of 690511232 is about 883.8737765357.

The spelling of 690511232 in words is "six hundred ninety million, five hundred eleven thousand, two hundred thirty-two".