6642992244 has 24 divisors (see below), whose sum is σ = 17714646208. Its totient is φ = 1897997760.

The previous prime is 6642992231. The next prime is 6642992261. The reversal of 6642992244 is 4422992466.

It is a Smith number, since the sum of its digits (48) coincides with the sum of the digits of its prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 6642992193 and 6642992202.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 39541537 + ... + 39541704.

Almost surely, 2^6642992244 is an apocalyptic number.

It is an amenable number.

6642992244 is an abundant number, since it is smaller than the sum of its proper divisors (11071653964).

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

6642992244 is a wasteful number, since it uses less digits than its factorization.

6642992244 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 79083255 (or 79083253 counting only the distinct ones).

The product of its digits is 1492992, while the sum is 48.

The square root of 6642992244 is about 81504.5535169662. The cubic root of 6642992244 is about 1879.8415669264.

The spelling of 6642992244 in words is "six billion, six hundred forty-two million, nine hundred ninety-two thousand, two hundred forty-four".