862656 has 28 divisors (see below), whose sum is σ = 2282952. Its totient is φ = 287488.

The previous prime is 862651. The next prime is 862669. The reversal of 862656 is 656268.

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (862651) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2055 + ... + 2438.

It is an arithmetic number, because the mean of its divisors is an integer number (81534).

2⁸⁶²⁶⁵⁶ is an apocalyptic number.

It is an amenable number.

862656 is an abundant number, since it is smaller than the sum of its proper divisors (1420296).

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

862656 is a wasteful number, since it uses less digits than its factorization.

862656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4508 (or 4498 counting only the distinct ones).

The product of its digits is 17280, while the sum is 33.

The square root of 862656 is about 928.7927648297. The cubic root of 862656 is about 95.1946516780.

The spelling of 862656 in words is "eight hundred sixty-two thousand, six hundred fifty-six".