656319 has 12 divisors (see below), whose sum is σ = 930824. Its totient is φ = 411264.

The previous prime is 656311. The next prime is 656321. The reversal of 656319 is 913656.

It is a happy number.

656319 is digitally balanced in base 7, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 656319 - 2³ = 656311 is a prime.

It is a super-2 number, since 2×656319² = 861509259522, which contains 22 as substring.

It is a hoax number, since the sum of its digits (30) coincides with the sum of the digits of its distinct prime factors.

It is a Duffinian number.

656319 is strictly pandigital in base 7.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (656311) 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 11 ways as a sum of consecutive naturals, for example, 489 + ... + 1245.

2⁶⁵⁶³¹⁹ is an apocalyptic number.

656319 is a deficient number, since it is larger than the sum of its proper divisors (274505).

656319 is a wasteful number, since it uses less digits than its factorization.

656319 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 794 (or 777 counting only the distinct ones).

The product of its digits is 4860, while the sum is 30.

The square root of 656319 is about 810.1351739062. The cubic root of 656319 is about 86.9037116769.

The spelling of 656319 in words is "six hundred fifty-six thousand, three hundred nineteen".