870501816 has 112 divisors (see below), whose sum is σ = 2532043800. Its totient is φ = 280107072.

The previous prime is 870501809. The next prime is 870501829. The reversal of 870501816 is 618105078.

870501816 is a `hidden beast` number, since 8 + 70 + 501 + 81 + 6 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an alternating number because its digits alternate between even and odd.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 27 ways as a sum of consecutive naturals, for example, 166555 + ... + 171701.

Almost surely, 2^870501816 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 870501816, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1266021900).

870501816 is an abundant number, since it is smaller than the sum of its proper divisors (1661541984).

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

870501816 is a wasteful number, since it uses less digits than its factorization.

870501816 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5200 (or 5181 counting only the distinct ones).

The product of its (nonzero) digits is 13440, while the sum is 36.

The square root of 870501816 is about 29504.2677590887. The cubic root of 870501816 is about 954.8237811604.

The spelling of 870501816 in words is "eight hundred seventy million, five hundred one thousand, eight hundred sixteen".