855658556 has 12 divisors (see below), whose sum is σ = 1499825880. Its totient is φ = 427136880.

The previous prime is 855658523. The next prime is 855658577. The reversal of 855658556 is 655856558.

It is a junction number, because it is equal to n+sod(n) for n = 855658498 and 855658507.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 170315 + ... + 175266.

It is an arithmetic number, because the mean of its divisors is an integer number (124985490).

Almost surely, 2^855658556 is an apocalyptic number.

It is an amenable number.

855658556 is a deficient number, since it is larger than the sum of its proper divisors (644167324).

855658556 is a wasteful number, since it uses less digits than its factorization.

855658556 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 346204 (or 346202 counting only the distinct ones).

The product of its digits is 7200000, while the sum is 53.

The square root of 855658556 is about 29251.6419368213. The cubic root of 855658556 is about 949.3656174692.

The spelling of 855658556 in words is "eight hundred fifty-five million, six hundred fifty-eight thousand, five hundred fifty-six".