870858905 has 16 divisors (see below), whose sum is σ = 1194808320. Its totient is φ = 596916672.

The previous prime is 870858871. The next prime is 870858971. The reversal of 870858905 is 509858078.

It is a cyclic number.

It is not a de Polignac number, because 870858905 - 2⁸ = 870858649 is a prime.

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 15 ways as a sum of consecutive naturals, for example, 141431 + ... + 147459.

It is an arithmetic number, because the mean of its divisors is an integer number (74675520).

Almost surely, 2^870858905 is an apocalyptic number.

It is an amenable number.

870858905 is a deficient number, since it is larger than the sum of its proper divisors (323949415).

870858905 is a wasteful number, since it uses less digits than its factorization.

870858905 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10168.

The product of its (nonzero) digits is 806400, while the sum is 50.

The square root of 870858905 is about 29510.3186190864. The cubic root of 870858905 is about 954.9543228978.

The spelling of 870858905 in words is "eight hundred seventy million, eight hundred fifty-eight thousand, nine hundred five".