870163863 has 4 divisors (see below), whose sum is σ = 1160218488. Its totient is φ = 580109240.

The previous prime is 870163849. The next prime is 870163873. The reversal of 870163863 is 368361078.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 870163863 - 2⁶ = 870163799 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (870163823) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 145027308 + ... + 145027313.

It is an arithmetic number, because the mean of its divisors is an integer number (290054622).

Almost surely, 2^870163863 is an apocalyptic number.

870163863 is a deficient number, since it is larger than the sum of its proper divisors (290054625).

870163863 is a wasteful number, since it uses less digits than its factorization.

870163863 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 290054624.

The product of its (nonzero) digits is 145152, while the sum is 42.

The square root of 870163863 is about 29498.5400147194. The cubic root of 870163863 is about 954.7002021232.

The spelling of 870163863 in words is "eight hundred seventy million, one hundred sixty-three thousand, eight hundred sixty-three".