855860670 has 48 divisors (see below), whose sum is σ = 2543130720. Its totient is φ = 195625152.

The previous prime is 855860657. The next prime is 855860671. The reversal of 855860670 is 76068558.

855860670 is a `hidden beast` number, since 8 + 5 + 586 + 0 + 67 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (855860671) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 678625 + ... + 679884.

It is an arithmetic number, because the mean of its divisors is an integer number (52981890).

Almost surely, 2^855860670 is an apocalyptic number.

855860670 is an abundant number, since it is smaller than the sum of its proper divisors (1687270050).

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

855860670 is a wasteful number, since it uses less digits than its factorization.

855860670 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1358529 (or 1358526 counting only the distinct ones).

The product of its (nonzero) digits is 403200, while the sum is 45.

The square root of 855860670 is about 29255.0964790752. The cubic root of 855860670 is about 949.4403610591.

The spelling of 855860670 in words is "eight hundred fifty-five million, eight hundred sixty thousand, six hundred seventy".