655764 has 12 divisors (see below), whose sum is σ = 1530144. Its totient is φ = 218584.

The previous prime is 655757. The next prime is 655807. The reversal of 655764 is 467556.

It is a tau number, because it is divible by the number of its divisors (12).

It is a Smith number, since the sum of its digits (33) coincides with the sum of the digits of its prime factors.

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 655764.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 27312 + ... + 27335.

It is an arithmetic number, because the mean of its divisors is an integer number (127512).

2⁶⁵⁵⁷⁶⁴ is an apocalyptic number.

It is an amenable number.

655764 is an abundant number, since it is smaller than the sum of its proper divisors (874380).

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

655764 is a wasteful number, since it uses less digits than its factorization.

655764 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54654 (or 54652 counting only the distinct ones).

The product of its digits is 25200, while the sum is 33.

The square root of 655764 is about 809.7925660316. The cubic root of 655764 is about 86.8792087742.

The spelling of 655764 in words is "six hundred fifty-five thousand, seven hundred sixty-four".