860870 has 16 divisors (see below), whose sum is σ = 1600128. Its totient is φ = 333120.

The previous prime is 860861. The next prime is 860887. The reversal of 860870 is 78068.

860870 = T₂₂₀ + T₂₂₁ + ... + T₂₅₀.

It is a congruent number.

It is an unprimeable number.

860870 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, 1079 + ... + 1698.

It is an arithmetic number, because the mean of its divisors is an integer number (100008).

2⁸⁶⁰⁸⁷⁰ is an apocalyptic number.

860870 is a deficient number, since it is larger than the sum of its proper divisors (739258).

860870 is a wasteful number, since it uses less digits than its factorization.

860870 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2815.

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

The square root of 860870 is about 927.8308035412. The cubic root of 860870 is about 95.1289108670.

The spelling of 860870 in words is "eight hundred sixty thousand, eight hundred seventy".