656894 has 12 divisors (see below), whose sum is σ = 1146384. Its totient is φ = 281484.

The previous prime is 656891. The next prime is 656917. The reversal of 656894 is 498656.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (656891) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3254 + ... + 3449.

It is an arithmetic number, because the mean of its divisors is an integer number (95532).

2⁶⁵⁶⁸⁹⁴ is an apocalyptic number.

656894 is a deficient number, since it is larger than the sum of its proper divisors (489490).

656894 is a wasteful number, since it uses less digits than its factorization.

656894 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6719 (or 6712 counting only the distinct ones).

The product of its digits is 51840, while the sum is 38.

The square root of 656894 is about 810.4899752619. The cubic root of 656894 is about 86.9290830022.

The spelling of 656894 in words is "six hundred fifty-six thousand, eight hundred ninety-four".