6642928629 has 12 divisors (see below), whose sum is σ = 9799498176. Its totient is φ = 4334392872.

The previous prime is 6642928597. The next prime is 6642928631. The reversal of 6642928629 is 9268292466.

It is a happy number.

6642928629 is a `hidden beast` number, since 6 + 6 + 4 + 2 + 9 + 2 + 8 + 629 = 666.

It is not a de Polignac number, because 6642928629 - 2⁵ = 6642928597 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6642928129) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 7851739 + ... + 7852584.

It is an arithmetic number, because the mean of its divisors is an integer number (816624848).

Almost surely, 2^6642928629 is an apocalyptic number.

It is an amenable number.

6642928629 is a deficient number, since it is larger than the sum of its proper divisors (3156569547).

6642928629 is a wasteful number, since it uses less digits than its factorization.

6642928629 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15704376 (or 15704373 counting only the distinct ones).

The product of its digits is 4478976, while the sum is 54.

The square root of 6642928629 is about 81504.1632617623. The cubic root of 6642928629 is about 1879.8355662920.

The spelling of 6642928629 in words is "six billion, six hundred forty-two million, nine hundred twenty-eight thousand, six hundred twenty-nine".