656157 has 4 divisors (see below), whose sum is σ = 874880. Its totient is φ = 437436.

The previous prime is 656153. The next prime is 656171. The reversal of 656157 is 751656.

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 656157 - 2² = 656153 is a prime.

It is a D-number.

It is a Duffinian number.

656157 is a lucky number.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 656157.

It is not an unprimeable number, because it can be changed into a prime (656153) 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, 109357 + ... + 109362.

It is an arithmetic number, because the mean of its divisors is an integer number (218720).

2⁶⁵⁶¹⁵⁷ is an apocalyptic number.

It is an amenable number.

656157 is a deficient number, since it is larger than the sum of its proper divisors (218723).

656157 is a wasteful number, since it uses less digits than its factorization.

656157 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 218722.

The product of its digits is 6300, while the sum is 30.

The square root of 656157 is about 810.0351844210. The cubic root of 656157 is about 86.8965609063.

The spelling of 656157 in words is "six hundred fifty-six thousand, one hundred fifty-seven".