6642222064 has 10 divisors (see below), whose sum is σ = 12869305280. Its totient is φ = 3321111024.

The previous prime is 6642222019. The next prime is 6642222091. The reversal of 6642222064 is 4602222466.

It is a super-2 number, since 2×6642222064² = 88238227894976840192, 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 as a sum of consecutive naturals, namely, 207569424 + ... + 207569455.

It is an arithmetic number, because the mean of its divisors is an integer number (1286930528).

Almost surely, 2^6642222064 is an apocalyptic number.

It is an amenable number.

6642222064 is a deficient number, since it is larger than the sum of its proper divisors (6227083216).

6642222064 is a wasteful number, since it uses less digits than its factorization.

6642222064 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 415138887 (or 415138881 counting only the distinct ones).

The product of its (nonzero) digits is 55296, while the sum is 34.

The square root of 6642222064 is about 81499.8286133167. The cubic root of 6642222064 is about 1879.7689153119.

The spelling of 6642222064 in words is "six billion, six hundred forty-two million, two hundred twenty-two thousand, sixty-four".