656161113 has 4 divisors (see below), whose sum is σ = 874881488. Its totient is φ = 437440740.

The previous prime is 656161091. The next prime is 656161117. The reversal of 656161113 is 311161656.

656161113 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 656161113 - 2⁵ = 656161081 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (656161117) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 109360183 + ... + 109360188.

It is an arithmetic number, because the mean of its divisors is an integer number (218720372).

Almost surely, 2^656161113 is an apocalyptic number.

It is an amenable number.

656161113 is a deficient number, since it is larger than the sum of its proper divisors (218720375).

656161113 is a wasteful number, since it uses less digits than its factorization.

656161113 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 218720374.

The product of its digits is 3240, while the sum is 30.

The square root of 656161113 is about 25615.6419595528. The cubic root of 656161113 is about 868.9674247097.

The spelling of 656161113 in words is "six hundred fifty-six million, one hundred sixty-one thousand, one hundred thirteen".