870001164 has 72 divisors (see below), whose sum is σ = 2253521088. Its totient is φ = 282918240.

The previous prime is 870001157. The next prime is 870001211. The reversal of 870001164 is 461100078.

It is a happy number.

870001164 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×870001164² = 1513804050722709792, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 256399 + ... + 259769.

It is an arithmetic number, because the mean of its divisors is an integer number (31298904).

Almost surely, 2^870001164 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 870001164, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1126760544).

870001164 is an abundant number, since it is smaller than the sum of its proper divisors (1383519924).

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

870001164 is a wasteful number, since it uses less digits than its factorization.

870001164 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3555 (or 3550 counting only the distinct ones).

The product of its (nonzero) digits is 1344, while the sum is 27.

The square root of 870001164 is about 29495.7821391466. The cubic root of 870001164 is about 954.6406966834.

The spelling of 870001164 in words is "eight hundred seventy million, one thousand, one hundred sixty-four".