870086 has 16 divisors (see below), whose sum is σ = 1570560. Its totient is φ = 353160.

The previous prime is 870083. The next prime is 870097. The reversal of 870086 is 680078.

870086 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (870083) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1370 + ... + 1901.

It is an arithmetic number, because the mean of its divisors is an integer number (98160).

2⁸⁷⁰⁰⁸⁶ is an apocalyptic number.

870086 is a deficient number, since it is larger than the sum of its proper divisors (700474).

870086 is a wasteful number, since it uses less digits than its factorization.

870086 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3299.

The product of its (nonzero) digits is 2688, while the sum is 29.

The square root of 870086 is about 932.7840050087. The cubic root of 870086 is about 95.4671725479.

The spelling of 870086 in words is "eight hundred seventy thousand, eighty-six".