656221802 has 16 divisors (see below), whose sum is σ = 1039944960. Its totient is φ = 310055088.

The previous prime is 656221801. The next prime is 656221807. The reversal of 656221802 is 208122656.

656221802 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (656221801) 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, 117638 + ... + 123089.

It is an arithmetic number, because the mean of its divisors is an integer number (64996560).

Almost surely, 2^656221802 is an apocalyptic number.

656221802 is a deficient number, since it is larger than the sum of its proper divisors (383723158).

656221802 is a wasteful number, since it uses less digits than its factorization.

656221802 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 240805.

The product of its (nonzero) digits is 11520, while the sum is 32.

The square root of 656221802 is about 25616.8265403816. The cubic root of 656221802 is about 868.9942144402.

The spelling of 656221802 in words is "six hundred fifty-six million, two hundred twenty-one thousand, eight hundred two".