870451 has 4 divisors (see below), whose sum is σ = 921672. Its totient is φ = 819232.

The previous prime is 870437. The next prime is 870461. The reversal of 870451 is 154078.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 870451 - 2⁷ = 870323 is a prime.

It is not an unprimeable number, because it can be changed into a prime (870431) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 25585 + ... + 25618.

It is an arithmetic number, because the mean of its divisors is an integer number (230418).

2⁸⁷⁰⁴⁵¹ is an apocalyptic number.

870451 is a deficient number, since it is larger than the sum of its proper divisors (51221).

870451 is a wasteful number, since it uses less digits than its factorization.

870451 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51220.

The product of its (nonzero) digits is 1120, while the sum is 25.

The square root of 870451 is about 932.9796353619. The cubic root of 870451 is about 95.4805201353.

The spelling of 870451 in words is "eight hundred seventy thousand, four hundred fifty-one".