870506 has 16 divisors (see below), whose sum is σ = 1607424. Its totient is φ = 344304.

The previous prime is 870497. The next prime is 870517. The reversal of 870506 is 605078.

It is a Harshad number since it is a multiple of its sum of digits (26).

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2210 + ... + 2573.

It is an arithmetic number, because the mean of its divisors is an integer number (100464).

2⁸⁷⁰⁵⁰⁶ is an apocalyptic number.

870506 is a deficient number, since it is larger than the sum of its proper divisors (736918).

870506 is a wasteful number, since it uses less digits than its factorization.

870506 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4805.

The product of its (nonzero) digits is 1680, while the sum is 26.

The square root of 870506 is about 933.0091103521. The cubic root of 870506 is about 95.4825310920.

The spelling of 870506 in words is "eight hundred seventy thousand, five hundred six".