6642160646 has 32 divisors (see below), whose sum is σ = 11204784000. Its totient is φ = 2927292480.

The previous prime is 6642160633. The next prime is 6642160673. The reversal of 6642160646 is 6460612466.

It is a super-2 number, since 2×6642160646² = 88236596094542274632, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 59705 + ... + 129803.

It is an arithmetic number, because the mean of its divisors is an integer number (350149500).

Almost surely, 2^6642160646 is an apocalyptic number.

6642160646 is a deficient number, since it is larger than the sum of its proper divisors (4562623354).

6642160646 is a wasteful number, since it uses less digits than its factorization.

6642160646 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70244.

The product of its (nonzero) digits is 248832, while the sum is 41.

The square root of 6642160646 is about 81499.4518141073. The cubic root of 6642160646 is about 1879.7631214676.

The spelling of 6642160646 in words is "six billion, six hundred forty-two million, one hundred sixty thousand, six hundred forty-six".