655863 has 16 divisors (see below), whose sum is σ = 959616. Its totient is φ = 396000.

The previous prime is 655859. The next prime is 655883. The reversal of 655863 is 368556.

655863 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 655863 - 2² = 655859 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (655883) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2488 + ... + 2738.

It is an arithmetic number, because the mean of its divisors is an integer number (59976).

2⁶⁵⁵⁸⁶³ is an apocalyptic number.

655863 is a deficient number, since it is larger than the sum of its proper divisors (303753).

655863 is a wasteful number, since it uses less digits than its factorization.

655863 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 334.

The product of its digits is 21600, while the sum is 33.

The square root of 655863 is about 809.8536904898. The cubic root of 655863 is about 86.8835805751.

The spelling of 655863 in words is "six hundred fifty-five thousand, eight hundred sixty-three".