6690317668 has 12 divisors (see below), whose sum is σ = 11712677760. Its totient is φ = 3343838312.

The previous prime is 6690317657. The next prime is 6690317707. The reversal of 6690317668 is 8667130966.

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, 318688 + ... + 339031.

It is an arithmetic number, because the mean of its divisors is an integer number (976056480).

Almost surely, 2^6690317668 is an apocalyptic number.

It is an amenable number.

6690317668 is a deficient number, since it is larger than the sum of its proper divisors (5022360092).

6690317668 is a wasteful number, since it uses less digits than its factorization.

6690317668 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 660266 (or 660264 counting only the distinct ones).

The product of its (nonzero) digits is 1959552, while the sum is 52.

The square root of 6690317668 is about 81794.3620795468. The cubic root of 6690317668 is about 1884.2950754385.

The spelling of 6690317668 in words is "six billion, six hundred ninety million, three hundred seventeen thousand, six hundred sixty-eight".