6241979664 has 40 divisors (see below), whose sum is σ = 17916794720. Its totient is φ = 2080659744.

The previous prime is 6241979663. The next prime is 6241979671. The reversal of 6241979664 is 4669791426.

It is a happy number.

6241979664 is a `hidden beast` number, since 624 + 1 + 9 + 7 + 9 + 6 + 6 + 4 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a self number, because there is not a number n which added to its sum of digits gives 6241979664.

It is not an unprimeable number, because it can be changed into a prime (6241979663) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7224082 + ... + 7224945.

It is an arithmetic number, because the mean of its divisors is an integer number (447919868).

Almost surely, 2^6241979664 is an apocalyptic number.

It is an amenable number.

6241979664 is an abundant number, since it is smaller than the sum of its proper divisors (11674815056).

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

6241979664 is a wasteful number, since it uses less digits than its factorization.

6241979664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14449044 (or 14449032 counting only the distinct ones).

The product of its digits is 3919104, while the sum is 54.

The square root of 6241979664 is about 79006.2001617595. The cubic root of 6241979664 is about 1841.2274874986.

The spelling of 6241979664 in words is "six billion, two hundred forty-one million, nine hundred seventy-nine thousand, six hundred sixty-four".