690335668 has 12 divisors (see below), whose sum is σ = 1317913632. Its totient is φ = 313788920.

The previous prime is 690335647. The next prime is 690335699. The reversal of 690335668 is 866533096.

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, 7844680 + ... + 7844767.

It is an arithmetic number, because the mean of its divisors is an integer number (109826136).

Almost surely, 2^690335668 is an apocalyptic number.

It is an amenable number.

690335668 is a deficient number, since it is larger than the sum of its proper divisors (627577964).

690335668 is a wasteful number, since it uses less digits than its factorization.

690335668 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15689462 (or 15689460 counting only the distinct ones).

The product of its (nonzero) digits is 699840, while the sum is 46.

The square root of 690335668 is about 26274.2396274374. The cubic root of 690335668 is about 883.7988612354.

The spelling of 690335668 in words is "six hundred ninety million, three hundred thirty-five thousand, six hundred sixty-eight".