656051013 has 24 divisors (see below), whose sum is σ = 972972000. Its totient is φ = 425798880.

The previous prime is 656051003. The next prime is 656051083. The reversal of 656051013 is 310150656.

It is a happy number.

656051013 is a `hidden beast` number, since 656 + 0 + 5 + 1 + 0 + 1 + 3 = 666.

It is not a de Polignac number, because 656051013 - 2¹⁸ = 655788869 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (656051003) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 57238 + ... + 67736.

It is an arithmetic number, because the mean of its divisors is an integer number (40540500).

Almost surely, 2^656051013 is an apocalyptic number.

It is an amenable number.

656051013 is a deficient number, since it is larger than the sum of its proper divisors (316920987).

656051013 is a wasteful number, since it uses less digits than its factorization.

656051013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10689 (or 10686 counting only the distinct ones).

The product of its (nonzero) digits is 2700, while the sum is 27.

The square root of 656051013 is about 25613.4927918861. The cubic root of 656051013 is about 868.9188194392.

The spelling of 656051013 in words is "six hundred fifty-six million, fifty-one thousand, thirteen".