6642768596 has 12 divisors (see below), whose sum is σ = 11698889748. Its totient is φ = 3300228672.

The previous prime is 6642768593. The next prime is 6642768607. The reversal of 6642768596 is 6958672466.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 3207636496 + 3435132100 = 56636^2 + 58610^2 .

It is a super-2 number, since 2×6642768596² = 88252749240007622432, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6642768593) 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 3 ways as a sum of consecutive naturals, for example, 5288201 + ... + 5289456.

It is an arithmetic number, because the mean of its divisors is an integer number (974907479).

Almost surely, 2^6642768596 is an apocalyptic number.

It is an amenable number.

6642768596 is a deficient number, since it is larger than the sum of its proper divisors (5056121152).

6642768596 is a wasteful number, since it uses less digits than its factorization.

6642768596 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10577818 (or 10577816 counting only the distinct ones).

The product of its digits is 26127360, while the sum is 59.

The square root of 6642768596 is about 81503.1815084540. The cubic root of 6642768596 is about 1879.8204706338.

The spelling of 6642768596 in words is "six billion, six hundred forty-two million, seven hundred sixty-eight thousand, five hundred ninety-six".