870860866 has 32 divisors (see below), whose sum is σ = 1376234496. Its totient is φ = 412776000.

The previous prime is 870860863. The next prime is 870860899. The reversal of 870860866 is 668068078.

It is not an unprimeable number, because it can be changed into a prime (870860863) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 796216 + ... + 797308.

It is an arithmetic number, because the mean of its divisors is an integer number (43007328).

Almost surely, 2^870860866 is an apocalyptic number.

870860866 is a deficient number, since it is larger than the sum of its proper divisors (505373630).

870860866 is a wasteful number, since it uses less digits than its factorization.

870860866 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1378.

The product of its (nonzero) digits is 774144, while the sum is 49.

The square root of 870860866 is about 29510.3518447341. The cubic root of 870860866 is about 954.9550396859.

The spelling of 870860866 in words is "eight hundred seventy million, eight hundred sixty thousand, eight hundred sixty-six".