656855001 has 48 divisors (see below), whose sum is σ = 1108144128. Its totient is φ = 385203600.

The previous prime is 656854981. The next prime is 656855011. The reversal of 656855001 is 100558656.

It is not a de Polignac number, because 656855001 - 2⁶ = 656854937 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (656855011) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 78900 + ... + 86826.

It is an arithmetic number, because the mean of its divisors is an integer number (23086336).

Almost surely, 2^656855001 is an apocalyptic number.

It is an amenable number.

656855001 is a deficient number, since it is larger than the sum of its proper divisors (451289127).

656855001 is a wasteful number, since it uses less digits than its factorization.

656855001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7984 (or 7972 counting only the distinct ones).

The product of its (nonzero) digits is 36000, while the sum is 36.

The square root of 656855001 is about 25629.1826049915. The cubic root of 656855001 is about 869.2736267671.

The spelling of 656855001 in words is "six hundred fifty-six million, eight hundred fifty-five thousand, one".