656051072 has 16 divisors (see below), whose sum is σ = 1306977000. Its totient is φ = 328025472.

The previous prime is 656051003. The next prime is 656051083. The reversal of 656051072 is 270150656.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (16).

It is a Harshad number since it is a multiple of its sum of digits (32).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2562572 + ... + 2562827.

Almost surely, 2^656051072 is an apocalyptic number.

It is an amenable number.

656051072 is a deficient number, since it is larger than the sum of its proper divisors (650925928).

656051072 is an equidigital number, since it uses as much as digits as its factorization.

656051072 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5125413 (or 5125401 counting only the distinct ones).

The product of its (nonzero) digits is 12600, while the sum is 32.

The square root of 656051072 is about 25613.4939436228. The cubic root of 656051072 is about 868.9188454871.

The spelling of 656051072 in words is "six hundred fifty-six million, fifty-one thousand, seventy-two".