870521004 has 18 divisors (see below), whose sum is σ = 2200483740. Its totient is φ = 290173656.

The previous prime is 870520993. The next prime is 870521011. The reversal of 870521004 is 400125078.

870521004 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (18).

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 12090534 + ... + 12090605.

Almost surely, 2^870521004 is an apocalyptic number.

It is an amenable number.

870521004 is an abundant number, since it is smaller than the sum of its proper divisors (1329962736).

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

870521004 is a wasteful number, since it uses less digits than its factorization.

870521004 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24181149 (or 24181144 counting only the distinct ones).

The product of its (nonzero) digits is 2240, while the sum is 27.

The square root of 870521004 is about 29504.5929305930. The cubic root of 870521004 is about 954.8307966633.

The spelling of 870521004 in words is "eight hundred seventy million, five hundred twenty-one thousand, four".