6642612732 has 24 divisors (see below), whose sum is σ = 17713634176. Its totient is φ = 1897889328.

The previous prime is 6642612721. The next prime is 6642612733. The reversal of 6642612732 is 2372162466.

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6642612733) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 39539278 + ... + 39539445.

Almost surely, 2^6642612732 is an apocalyptic number.

It is an amenable number.

6642612732 is an abundant number, since it is smaller than the sum of its proper divisors (11071021444).

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

6642612732 is a wasteful number, since it uses less digits than its factorization.

6642612732 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 79078737 (or 79078735 counting only the distinct ones).

The product of its digits is 145152, while the sum is 39.

The square root of 6642612732 is about 81502.2253193126. The cubic root of 6642612732 is about 1879.8057679976.

The spelling of 6642612732 in words is "six billion, six hundred forty-two million, six hundred twelve thousand, seven hundred thirty-two".