6642576004 has 9 divisors (see below), whose sum is σ = 11624793271. Its totient is φ = 3321206500.

The previous prime is 6642575983. The next prime is 6642576007. The reversal of 6642576004 is 4006752466.

The square root of 6642576004 is 81502.

It is a perfect power (a square), and thus also a powerful number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6642576007) by changing a digit.

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 2 ways as a sum of consecutive naturals, for example, 142629 + ... + 183379.

Almost surely, 2^6642576004 is an apocalyptic number.

6642576004 is the 81502-nd square number.

It is an amenable number.

6642576004 is a deficient number, since it is larger than the sum of its proper divisors (4982217267).

6642576004 is an frugal number, since it uses more digits than its factorization.

6642576004 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 81506 (or 40753 counting only the distinct ones).

The product of its (nonzero) digits is 241920, while the sum is 40.

The cubic root of 6642576004 is about 1879.8023034154.

The spelling of 6642576004 in words is "six billion, six hundred forty-two million, five hundred seventy-six thousand, four".