6668547264 has 70 divisors (see below), whose sum is σ = 19767678524. Its totient is φ = 2222847360.

The previous prime is 6668547241. The next prime is 6668547283. The reversal of 6668547264 is 4627458666.

It is a super-2 number, since 2×6668547264² = 88939045224403771392, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a self number, because there is not a number n which added to its sum of digits gives 6668547264.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 638002 + ... + 648369.

Almost surely, 2^6668547264 is an apocalyptic number.

6668547264 is a gapful number since it is divisible by the number (64) formed by its first and last digit.

It is an amenable number.

6668547264 is an abundant number, since it is smaller than the sum of its proper divisors (13099131260).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

6668547264 is a wasteful number, since it uses less digits than its factorization.

6668547264 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1286395 (or 1286376 counting only the distinct ones).

The product of its digits is 11612160, while the sum is 54.

The square root of 6668547264 is about 81661.1735404286. The cubic root of 6668547264 is about 1882.2490121088.

The spelling of 6668547264 in words is "six billion, six hundred sixty-eight million, five hundred forty-seven thousand, two hundred sixty-four".