656647622 has 16 divisors (see below), whose sum is σ = 1007778240. Its totient is φ = 320747328.

The previous prime is 656647603. The next prime is 656647643. The reversal of 656647622 is 226746656.

656647622 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 47348 + ... + 59624.

It is an arithmetic number, because the mean of its divisors is an integer number (62986140).

Almost surely, 2^656647622 is an apocalyptic number.

656647622 is a deficient number, since it is larger than the sum of its proper divisors (351130618).

656647622 is a wasteful number, since it uses less digits than its factorization.

656647622 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12895.

The product of its digits is 725760, while the sum is 44.

The square root of 656647622 is about 25625.1365264656. The cubic root of 656647622 is about 869.1821362201.

The spelling of 656647622 in words is "six hundred fifty-six million, six hundred forty-seven thousand, six hundred twenty-two".