870031816 has 8 divisors (see below), whose sum is σ = 1631309670. Its totient is φ = 435015904.

The previous prime is 870031777. The next prime is 870031823. The reversal of 870031816 is 618130078.

It can be written as a sum of positive squares in only one way, i.e., 710009316 + 160022500 = 26646^2 + 12650^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 54376981 + ... + 54376996.

Almost surely, 2^870031816 is an apocalyptic number.

It is an amenable number.

870031816 is a deficient number, since it is larger than the sum of its proper divisors (761277854).

870031816 is a wasteful number, since it uses less digits than its factorization.

870031816 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 108753983 (or 108753979 counting only the distinct ones).

The product of its (nonzero) digits is 8064, while the sum is 34.

The square root of 870031816 is about 29496.3017342853. The cubic root of 870031816 is about 954.6519078956.

The spelling of 870031816 in words is "eight hundred seventy million, thirty-one thousand, eight hundred sixteen".