2256806664 has 64 divisors (see below), whose sum is σ = 7164470400. Its totient is φ = 644801472.

The previous prime is 2256806659. The next prime is 2256806677. The reversal of 2256806664 is 4666086522.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 744787 + ... + 747810.

It is an arithmetic number, because the mean of its divisors is an integer number (111944850).

Almost surely, 2^2256806664 is an apocalyptic number.

2256806664 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

2256806664 is an abundant number, since it is smaller than the sum of its proper divisors (4907663736).

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

2256806664 is a wasteful number, since it uses less digits than its factorization.

2256806664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1492619 (or 1492609 counting only the distinct ones).

The product of its (nonzero) digits is 829440, while the sum is 45.

The square root of 2256806664 is about 47505.8592596745. The cubic root of 2256806664 is about 1311.6907376984.

The spelling of 2256806664 in words is "two billion, two hundred fifty-six million, eight hundred six thousand, six hundred sixty-four".