664224051 has 16 divisors (see below), whose sum is σ = 941769504. Its totient is φ = 414971904.

The previous prime is 664224047. The next prime is 664224079. The reversal of 664224051 is 150422466.

664224051 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 664224051 - 2² = 664224047 is a prime.

It is not an unprimeable number, because it can be changed into a prime (664224251) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16066 + ... + 39831.

It is an arithmetic number, because the mean of its divisors is an integer number (58860594).

Almost surely, 2^664224051 is an apocalyptic number.

664224051 is a deficient number, since it is larger than the sum of its proper divisors (277545453).

664224051 is a wasteful number, since it uses less digits than its factorization.

664224051 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56150.

The product of its (nonzero) digits is 11520, while the sum is 30.

The square root of 664224051 is about 25772.5445193136. The cubic root of 664224051 is about 872.5122483865.

The spelling of 664224051 in words is "six hundred sixty-four million, two hundred twenty-four thousand, fifty-one".