690436832 has 24 divisors (see below), whose sum is σ = 1365247800. Its totient is φ = 343707264.

The previous prime is 690436819. The next prime is 690436837. The reversal of 690436832 is 238634096.

It is a self number, because there is not a number n which added to its sum of digits gives 690436832.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (690436837) 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, 39782 + ... + 54437.

It is an arithmetic number, because the mean of its divisors is an integer number (56885325).

Almost surely, 2^690436832 is an apocalyptic number.

It is an amenable number.

690436832 is a deficient number, since it is larger than the sum of its proper divisors (674810968).

690436832 is a wasteful number, since it uses less digits than its factorization.

690436832 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 94458 (or 94450 counting only the distinct ones).

The product of its (nonzero) digits is 186624, while the sum is 41.

The square root of 690436832 is about 26276.1647125299. The cubic root of 690436832 is about 883.8420306987.

The spelling of 690436832 in words is "six hundred ninety million, four hundred thirty-six thousand, eight hundred thirty-two".