870670 has 16 divisors (see below), whose sum is σ = 1587600. Its totient is φ = 343744.

The previous prime is 870643. The next prime is 870679. The reversal of 870670 is 76078.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (870679) by changing a digit.

870670 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 306 + ... + 1354.

It is an arithmetic number, because the mean of its divisors is an integer number (99225).

2⁸⁷⁰⁶⁷⁰ is an apocalyptic number.

870670 is a deficient number, since it is larger than the sum of its proper divisors (716930).

870670 is a wasteful number, since it uses less digits than its factorization.

870670 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1139.

The product of its (nonzero) digits is 2352, while the sum is 28.

The square root of 870670 is about 933.0969938865. The cubic root of 870670 is about 95.4885268967.

It can be divided in two parts, 870 and 670, that added together give a triangular number (1540 = T₅₅).

The spelling of 870670 in words is "eight hundred seventy thousand, six hundred seventy".