690044808 has 64 divisors (see below), whose sum is σ = 1750311360. Its totient is φ = 226676736.

The previous prime is 690044737. The next prime is 690044809. The reversal of 690044808 is 808440096.

It is not an unprimeable number, because it can be changed into a prime (690044809) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 728191 + ... + 729137.

It is an arithmetic number, because the mean of its divisors is an integer number (27348615).

Almost surely, 2^690044808 is an apocalyptic number.

It is an amenable number.

690044808 is an abundant number, since it is smaller than the sum of its proper divisors (1060266552).

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

690044808 is a wasteful number, since it uses less digits than its factorization.

690044808 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1366 (or 1362 counting only the distinct ones).

The product of its (nonzero) digits is 55296, while the sum is 39.

The square root of 690044808 is about 26268.7039649846. The cubic root of 690044808 is about 883.6747197682.

The spelling of 690044808 in words is "six hundred ninety million, forty-four thousand, eight hundred eight".