640022882 has 8 divisors (see below), whose sum is σ = 960498000. Its totient is φ = 319856884.

The previous prime is 640022849. The next prime is 640022891. The reversal of 640022882 is 288220046.

It is a happy number.

640022882 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 72032 + ... + 80427.

It is an arithmetic number, because the mean of its divisors is an integer number (120062250).

Almost surely, 2^640022882 is an apocalyptic number.

640022882 is a deficient number, since it is larger than the sum of its proper divisors (320475118).

640022882 is a wasteful number, since it uses less digits than its factorization.

640022882 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 154560.

The product of its (nonzero) digits is 12288, while the sum is 32.

The square root of 640022882 is about 25298.6735225387. The cubic root of 640022882 is about 861.7841462601.

The spelling of 640022882 in words is "six hundred forty million, twenty-two thousand, eight hundred eighty-two".