656934 has 16 divisors (see below), whose sum is σ = 1327872. Its totient is φ = 216648.

The previous prime is 656923. The next prime is 656939. The reversal of 656934 is 439656.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 656895 and 656904.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (656939) by changing a digit.

656934 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 87 + ... + 1149.

It is an arithmetic number, because the mean of its divisors is an integer number (82992).

2⁶⁵⁶⁹³⁴ is an apocalyptic number.

656934 is an abundant number, since it is smaller than the sum of its proper divisors (670938).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

656934 is a wasteful number, since it uses less digits than its factorization.

656934 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1171.

The product of its digits is 19440, while the sum is 33.

The square root of 656934 is about 810.5146513173. The cubic root of 656934 is about 86.9308474130.

The spelling of 656934 in words is "six hundred fifty-six thousand, nine hundred thirty-four".