855620 has 24 divisors (see below), whose sum is σ = 1814400. Its totient is φ = 338912.

The previous prime is 855619. The next prime is 855641. The reversal of 855620 is 26558.

It is a self number, because there is not a number n which added to its sum of digits gives 855620.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3461 + ... + 3699.

It is an arithmetic number, because the mean of its divisors is an integer number (75600).

2⁸⁵⁵⁶²⁰ is an apocalyptic number.

It is an amenable number.

855620 is an abundant number, since it is smaller than the sum of its proper divisors (958780).

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

855620 is a wasteful number, since it uses less digits than its factorization.

855620 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 427 (or 425 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 26.

The square root of 855620 is about 924.9972972933. The cubic root of 855620 is about 94.9351357774.

The spelling of 855620 in words is "eight hundred fifty-five thousand, six hundred twenty".