861270 has 32 divisors (see below), whose sum is σ = 2177280. Its totient is φ = 217440.

The previous prime is 861239. The next prime is 861293. The reversal of 861270 is 72168.

It is a self number, because there is not a number n which added to its sum of digits gives 861270.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 186 + ... + 1325.

It is an arithmetic number, because the mean of its divisors is an integer number (68040).

2⁸⁶¹²⁷⁰ is an apocalyptic number.

861270 is an abundant number, since it is smaller than the sum of its proper divisors (1316010).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

861270 is a wasteful number, since it uses less digits than its factorization.

861270 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1540.

The product of its (nonzero) digits is 672, while the sum is 24.

The square root of 861270 is about 928.0463350501. The cubic root of 861270 is about 95.1436423489.

The spelling of 861270 in words is "eight hundred sixty-one thousand, two hundred seventy".