656813151 has 16 divisors (see below), whose sum is σ = 1004446720. Its totient is φ = 423749880.

The previous prime is 656813149. The next prime is 656813167. The reversal of 656813151 is 151318656.

It is not a de Polignac number, because 656813151 - 2¹ = 656813149 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (656813251) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 391525 + ... + 393198.

It is an arithmetic number, because the mean of its divisors is an integer number (62777920).

Almost surely, 2^656813151 is an apocalyptic number.

656813151 is a deficient number, since it is larger than the sum of its proper divisors (347633569).

656813151 is a wasteful number, since it uses less digits than its factorization.

656813151 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 784763 (or 784757 counting only the distinct ones).

The product of its digits is 21600, while the sum is 36.

The square root of 656813151 is about 25628.3661398849. The cubic root of 656813151 is about 869.2551651209.

The spelling of 656813151 in words is "six hundred fifty-six million, eight hundred thirteen thousand, one hundred fifty-one".