656706226804 has 24 divisors (see below), whose sum is σ = 1188268558848. Its totient is φ = 317350618560.

The previous prime is 656706226801. The next prime is 656706226829. The reversal of 656706226804 is 408622607656.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (656706226801) 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, 18694164 + ... + 18729259.

It is an arithmetic number, because the mean of its divisors is an integer number (49511189952).

Almost surely, 2^656706226804 is an apocalyptic number.

It is an amenable number.

656706226804 is a deficient number, since it is larger than the sum of its proper divisors (531562332044).

656706226804 is a wasteful number, since it uses less digits than its factorization.

656706226804 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37423575 (or 37423573 counting only the distinct ones).

The product of its (nonzero) digits is 5806080, while the sum is 52.

The spelling of 656706226804 in words is "six hundred fifty-six billion, seven hundred six million, two hundred twenty-six thousand, eight hundred four".