2172565064 has 32 divisors (see below), whose sum is σ = 4209580800. Its totient is φ = 1050087360.

The previous prime is 2172565063. The next prime is 2172565069. The reversal of 2172565064 is 4605652712.

It is not an unprimeable number, because it can be changed into a prime (2172565061) 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, 248414 + ... + 257010.

It is an arithmetic number, because the mean of its divisors is an integer number (131549400).

Almost surely, 2^2172565064 is an apocalyptic number.

It is an amenable number.

2172565064 is a deficient number, since it is larger than the sum of its proper divisors (2037015736).

2172565064 is a wasteful number, since it uses less digits than its factorization.

2172565064 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9653 (or 9649 counting only the distinct ones).

The product of its (nonzero) digits is 100800, while the sum is 38.

The square root of 2172565064 is about 46610.7827010017. The cubic root of 2172565064 is about 1295.1625072968.

The spelling of 2172565064 in words is "two billion, one hundred seventy-two million, five hundred sixty-five thousand, sixty-four".