6642625376 has 24 divisors (see below), whose sum is σ = 13091684760. Its totient is φ = 3317753088.

The previous prime is 6642625343. The next prime is 6642625387. The reversal of 6642625376 is 6735262466.

It is a self number, because there is not a number n which added to its sum of digits gives 6642625376.

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, 80786 + ... + 140753.

It is an arithmetic number, because the mean of its divisors is an integer number (545486865).

Almost surely, 2^6642625376 is an apocalyptic number.

It is an amenable number.

6642625376 is a deficient number, since it is larger than the sum of its proper divisors (6449059384).

6642625376 is a wasteful number, since it uses less digits than its factorization.

6642625376 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 222486 (or 222478 counting only the distinct ones).

The product of its digits is 2177280, while the sum is 47.

The square root of 6642625376 is about 81502.3028877099. The cubic root of 6642625376 is about 1879.8069607135.

The spelling of 6642625376 in words is "six billion, six hundred forty-two million, six hundred twenty-five thousand, three hundred seventy-six".