656893 has 4 divisors (see below), whose sum is σ = 658588. Its totient is φ = 655200.

The previous prime is 656891. The next prime is 656917. The reversal of 656893 is 398656.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 611524 + 45369 = 782^2 + 213^2 .

It is a cyclic number.

It is not a de Polignac number, because 656893 - 2¹ = 656891 is a prime.

It is a Duffinian number.

656893 is a lucky number.

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 3 ways as a sum of consecutive naturals, for example, 55 + ... + 1147.

It is an arithmetic number, because the mean of its divisors is an integer number (164647).

2⁶⁵⁶⁸⁹³ is an apocalyptic number.

It is an amenable number.

656893 is a deficient number, since it is larger than the sum of its proper divisors (1695).

656893 is a wasteful number, since it uses less digits than its factorization.

656893 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1694.

The product of its digits is 38880, while the sum is 37.

The square root of 656893 is about 810.4893583509. The cubic root of 656893 is about 86.9290388910.

The spelling of 656893 in words is "six hundred fifty-six thousand, eight hundred ninety-three".