870251 has 8 divisors (see below), whose sum is σ = 917664. Its totient is φ = 823680.

The previous prime is 870241. The next prime is 870253. The reversal of 870251 is 152078.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-870251 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (23).

It is a Duffinian number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 870251.

It is not an unprimeable number, because it can be changed into a prime (870253) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3491 + ... + 3731.

It is an arithmetic number, because the mean of its divisors is an integer number (114708).

2⁸⁷⁰²⁵¹ is an apocalyptic number.

870251 is a deficient number, since it is larger than the sum of its proper divisors (47413).

870251 is a wasteful number, since it uses less digits than its factorization.

870251 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 421.

The product of its (nonzero) digits is 560, while the sum is 23.

The square root of 870251 is about 932.8724457288. The cubic root of 870251 is about 95.4732068510.

The spelling of 870251 in words is "eight hundred seventy thousand, two hundred fifty-one".