870570987 has 32 divisors (see below), whose sum is σ = 1366799616. Its totient is φ = 485923200.

The previous prime is 870570979. The next prime is 870570997. The reversal of 870570987 is 789075078.

It is not a de Polignac number, because 870570987 - 2³ = 870570979 is a prime.

It is not an unprimeable number, because it can be changed into a prime (870570997) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 208573 + ... + 212705.

It is an arithmetic number, because the mean of its divisors is an integer number (42712488).

Almost surely, 2^870570987 is an apocalyptic number.

870570987 is a deficient number, since it is larger than the sum of its proper divisors (496228629).

870570987 is a wasteful number, since it uses less digits than its factorization.

870570987 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4651.

The product of its (nonzero) digits is 987840, while the sum is 51.

The square root of 870570987 is about 29505.4399560488. The cubic root of 870570987 is about 954.8490709282.

The spelling of 870570987 in words is "eight hundred seventy million, five hundred seventy thousand, nine hundred eighty-seven".