656007021622 has 16 divisors (see below), whose sum is σ = 1002602295072. Its totient is φ = 321806571840.

The previous prime is 656007021617. The next prime is 656007021623. The reversal of 656007021622 is 226120700656.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (656007021623) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7857703 + ... + 7940749.

It is an arithmetic number, because the mean of its divisors is an integer number (62662643442).

Almost surely, 2^656007021622 is an apocalyptic number.

656007021622 is a deficient number, since it is larger than the sum of its proper divisors (346595273450).

656007021622 is a wasteful number, since it uses less digits than its factorization.

656007021622 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 157623.

The product of its (nonzero) digits is 60480, while the sum is 37.

The spelling of 656007021622 in words is "six hundred fifty-six billion, seven million, twenty-one thousand, six hundred twenty-two".