655839 has 6 divisors (see below), whose sum is σ = 947336. Its totient is φ = 437220.

The previous prime is 655807. The next prime is 655847. The reversal of 655839 is 938556.

655839 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 655839 - 2⁵ = 655807 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (655849) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 36427 + ... + 36444.

2⁶⁵⁵⁸³⁹ is an apocalyptic number.

655839 is a deficient number, since it is larger than the sum of its proper divisors (291497).

655839 is a wasteful number, since it uses less digits than its factorization.

655839 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72877 (or 72874 counting only the distinct ones).

The product of its digits is 32400, while the sum is 36.

The square root of 655839 is about 809.8388728630. The cubic root of 655839 is about 86.8825207850.

The spelling of 655839 in words is "six hundred fifty-five thousand, eight hundred thirty-nine".