656250066 has 32 divisors (see below), whose sum is σ = 1459315200. Its totient is φ = 218602800.

The previous prime is 656250029. The next prime is 656250073. The reversal of 656250066 is 660052656.

656250066 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 656250066.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 102240 + ... + 108468.

It is an arithmetic number, because the mean of its divisors is an integer number (45603600).

Almost surely, 2^656250066 is an apocalyptic number.

656250066 is an abundant number, since it is smaller than the sum of its proper divisors (803065134).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

656250066 is a wasteful number, since it uses less digits than its factorization.

656250066 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8191 (or 8185 counting only the distinct ones).

The product of its (nonzero) digits is 64800, while the sum is 36.

The square root of 656250066 is about 25617.3782030871. The cubic root of 656250066 is about 869.0066903540.

The spelling of 656250066 in words is "six hundred fifty-six million, two hundred fifty thousand, sixty-six".