6686646933 has 8 divisors (see below), whose sum is σ = 8916317728. Its totient is φ = 4457370384.

The previous prime is 6686646929. The next prime is 6686646937. The reversal of 6686646933 is 3396466866.

It is an interprime number because it is at equal distance from previous prime (6686646929) and next prime (6686646937).

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 6686646933 - 2² = 6686646929 is a prime.

It is a super-2 number, since 2×6686646933² = 89422494413196612978, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6686646937) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 56410 + ... + 128667.

It is an arithmetic number, because the mean of its divisors is an integer number (1114539716).

Almost surely, 2^6686646933 is an apocalyptic number.

It is an amenable number.

6686646933 is a deficient number, since it is larger than the sum of its proper divisors (2229670795).

6686646933 is a wasteful number, since it uses less digits than its factorization.

6686646933 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 197123.

The product of its digits is 20155392, while the sum is 57.

The square root of 6686646933 is about 81771.9201988066. The cubic root of 6686646933 is about 1883.9503975721.

The spelling of 6686646933 in words is "six billion, six hundred eighty-six million, six hundred forty-six thousand, nine hundred thirty-three".