690807608 has 16 divisors (see below), whose sum is σ = 1339929000. Its totient is φ = 333493216.

The previous prime is 690807581. The next prime is 690807617. The reversal of 690807608 is 806708096.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1488578 + ... + 1489041.

Almost surely, 2^690807608 is an apocalyptic number.

It is an amenable number.

690807608 is a deficient number, since it is larger than the sum of its proper divisors (649121392).

690807608 is a wasteful number, since it uses less digits than its factorization.

690807608 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2977654 (or 2977650 counting only the distinct ones).

The product of its (nonzero) digits is 145152, while the sum is 44.

The square root of 690807608 is about 26283.2191331275. The cubic root of 690807608 is about 884.0002149833. Note that the first 3 decimals are identical.

The spelling of 690807608 in words is "six hundred ninety million, eight hundred seven thousand, six hundred eight".