870725 has 12 divisors (see below), whose sum is σ = 1117860. Its totient is φ = 672000.

The previous prime is 870703. The next prime is 870731. The reversal of 870725 is 527078.

It can be written as a sum of positive squares in 6 ways, for example, as 201601 + 669124 = 449^2 + 818^2 .

It is not a de Polignac number, because 870725 - 2¹² = 866629 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (29).

It is an alternating number because its digits alternate between even and odd.

It is a Curzon number.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 870725.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 125 + ... + 1325.

It is an arithmetic number, because the mean of its divisors is an integer number (93155).

2⁸⁷⁰⁷²⁵ is an apocalyptic number.

It is an amenable number.

870725 is a deficient number, since it is larger than the sum of its proper divisors (247135).

870725 is a wasteful number, since it uses less digits than its factorization.

870725 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1240 (or 1235 counting only the distinct ones).

The product of its (nonzero) digits is 3920, while the sum is 29.

The square root of 870725 is about 933.1264651696. The cubic root of 870725 is about 95.4905375163.

The spelling of 870725 in words is "eight hundred seventy thousand, seven hundred twenty-five".