690417968 has 20 divisors (see below), whose sum is σ = 1366147680. Its totient is φ = 337863744.

The previous prime is 690417899. The next prime is 690417971. The reversal of 690417968 is 869714096.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 458303 + ... + 459806.

It is an arithmetic number, because the mean of its divisors is an integer number (68307384).

Almost surely, 2^690417968 is an apocalyptic number.

It is an amenable number.

690417968 is a deficient number, since it is larger than the sum of its proper divisors (675729712).

690417968 is a wasteful number, since it uses less digits than its factorization.

690417968 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 918164 (or 918158 counting only the distinct ones).

The product of its (nonzero) digits is 653184, while the sum is 50.

The square root of 690417968 is about 26275.8057535825. The cubic root of 690417968 is about 883.8339812306.

The spelling of 690417968 in words is "six hundred ninety million, four hundred seventeen thousand, nine hundred sixty-eight".