6642662080 has 56 divisors (see below), whose sum is σ = 15834774528. Its totient is φ = 2654220288.

The previous prime is 6642662071. The next prime is 6642662101. The reversal of 6642662080 is 802662466.

It is a Harshad number since it is a multiple of its sum of digits (40).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 302017 + ... + 323263.

Almost surely, 2^6642662080 is an apocalyptic number.

It is an amenable number.

6642662080 is an abundant number, since it is smaller than the sum of its proper divisors (9192112448).

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

6642662080 is a wasteful number, since it uses less digits than its factorization.

6642662080 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22241 (or 22231 counting only the distinct ones).

The product of its (nonzero) digits is 165888, while the sum is 40.

The square root of 6642662080 is about 81502.5280589504. The cubic root of 6642662080 is about 1879.8104230146.

The spelling of 6642662080 in words is "six billion, six hundred forty-two million, six hundred sixty-two thousand, eighty".