870858906 has 16 divisors (see below), whose sum is σ = 1742023584. Its totient is φ = 290235344.

The previous prime is 870858871. The next prime is 870858971. The reversal of 870858906 is 609858078.

It is a happy number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 43141 + ... + 60023.

It is an arithmetic number, because the mean of its divisors is an integer number (108876474).

Almost surely, 2^870858906 is an apocalyptic number.

870858906 is an abundant number, since it is smaller than the sum of its proper divisors (871164678).

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

870858906 is a wasteful number, since it uses less digits than its factorization.

870858906 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25485.

The product of its (nonzero) digits is 967680, while the sum is 51.

The square root of 870858906 is about 29510.3186360297. The cubic root of 870858906 is about 954.9543232633.

The spelling of 870858906 in words is "eight hundred seventy million, eight hundred fifty-eight thousand, nine hundred six".