6642085072 has 20 divisors (see below), whose sum is σ = 14707474336. Its totient is φ = 2846607840.

The previous prime is 6642085049. The next prime is 6642085097. The reversal of 6642085072 is 2705802466.

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, 29652054 + ... + 29652277.

Almost surely, 2^6642085072 is an apocalyptic number.

It is an amenable number.

6642085072 is an abundant number, since it is smaller than the sum of its proper divisors (8065389264).

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

6642085072 is a wasteful number, since it uses less digits than its factorization.

6642085072 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 59304346 (or 59304340 counting only the distinct ones).

The product of its (nonzero) digits is 161280, while the sum is 40.

The square root of 6642085072 is about 81498.9881654981. The cubic root of 6642085072 is about 1879.7559921731.

The spelling of 6642085072 in words is "six billion, six hundred forty-two million, eighty-five thousand, seventy-two".