2556456684 has 24 divisors (see below), whose sum is σ = 5995046400. Its totient is φ = 847869264.

The previous prime is 2556456673. The next prime is 2556456701. The reversal of 2556456684 is 4866546552.

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, 532884 + ... + 537659.

It is an arithmetic number, because the mean of its divisors is an integer number (249793600).

Almost surely, 2^2556456684 is an apocalyptic number.

It is an amenable number.

2556456684 is an abundant number, since it is smaller than the sum of its proper divisors (3438589716).

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

2556456684 is a wasteful number, since it uses less digits than its factorization.

2556456684 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1070749 (or 1070747 counting only the distinct ones).

The product of its digits is 6912000, while the sum is 51.

The square root of 2556456684 is about 50561.4149722889. The cubic root of 2556456684 is about 1367.3493216421.

The spelling of 2556456684 in words is "two billion, five hundred fifty-six million, four hundred fifty-six thousand, six hundred eighty-four".