870659 has 8 divisors (see below), whose sum is σ = 898560. Its totient is φ = 843336.

The previous prime is 870643. The next prime is 870679. The reversal of 870659 is 956078.

870659 = 36² + 37² + ... + 138².

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 870659 - 2⁴ = 870643 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (870629) 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, 8084 + ... + 8190.

It is an arithmetic number, because the mean of its divisors is an integer number (112320).

2⁸⁷⁰⁶⁵⁹ is an apocalyptic number.

870659 is a deficient number, since it is larger than the sum of its proper divisors (27901).

870659 is a wasteful number, since it uses less digits than its factorization.

870659 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 289.

The product of its (nonzero) digits is 15120, while the sum is 35.

The square root of 870659 is about 933.0910995182. The cubic root of 870659 is about 95.4881247626.

The spelling of 870659 in words is "eight hundred seventy thousand, six hundred fifty-nine".