6668290064 has 40 divisors (see below), whose sum is σ = 13225820160. Its totient is φ = 3255510528.

The previous prime is 6668290049. The next prime is 6668290081. The reversal of 6668290064 is 4600928666.

It is a super-2 number, since 2×6668290064² = 88932184755282248192, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (47).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 315377 + ... + 335855.

It is an arithmetic number, because the mean of its divisors is an integer number (330645504).

Almost surely, 2^6668290064 is an apocalyptic number.

It is an amenable number.

6668290064 is a deficient number, since it is larger than the sum of its proper divisors (6557530096).

6668290064 is a wasteful number, since it uses less digits than its factorization.

6668290064 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20967 (or 20961 counting only the distinct ones).

The product of its (nonzero) digits is 746496, while the sum is 47.

The square root of 6668290064 is about 81659.5987254407. The cubic root of 6668290064 is about 1882.2248129016.

The spelling of 6668290064 in words is "six billion, six hundred sixty-eight million, two hundred ninety thousand, sixty-four".