656438103 has 12 divisors (see below), whose sum is σ = 955111248. Its totient is φ = 434430240.

The previous prime is 656438099. The next prime is 656438137. The reversal of 656438103 is 301834656.

656438103 is a `hidden beast` number, since 6 + 5 + 643 + 8 + 1 + 0 + 3 = 666.

656438103 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 656438103 - 2² = 656438099 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (656438173) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 264963 + ... + 267428.

It is an arithmetic number, because the mean of its divisors is an integer number (79592604).

Almost surely, 2^656438103 is an apocalyptic number.

656438103 is a deficient number, since it is larger than the sum of its proper divisors (298673145).

656438103 is a wasteful number, since it uses less digits than its factorization.

656438103 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 532534 (or 532531 counting only the distinct ones).

The product of its (nonzero) digits is 51840, while the sum is 36.

The square root of 656438103 is about 25621.0480464793. The cubic root of 656438103 is about 869.0896819934.

The spelling of 656438103 in words is "six hundred fifty-six million, four hundred thirty-eight thousand, one hundred three".