655858 has 16 divisors (see below), whose sum is σ = 1140480. Its totient is φ = 277056.

The previous prime is 655849. The next prime is 655859. The reversal of 655858 is 858556.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (655859) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 810 + ... + 1402.

It is an arithmetic number, because the mean of its divisors is an integer number (71280).

2⁶⁵⁵⁸⁵⁸ is an apocalyptic number.

655858 is a deficient number, since it is larger than the sum of its proper divisors (484622).

655858 is a wasteful number, since it uses less digits than its factorization.

655858 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 681.

The product of its digits is 48000, while the sum is 37.

The square root of 655858 is about 809.8506035066. The cubic root of 655858 is about 86.8833597876.

The spelling of 655858 in words is "six hundred fifty-five thousand, eight hundred fifty-eight".