870157 has 4 divisors (see below), whose sum is σ = 872896. Its totient is φ = 867420.

The previous prime is 870151. The next prime is 870161. The reversal of 870157 is 751078.

It is a happy number.

870157 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 870157 - 2¹⁹ = 345869 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (870151) 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, 819 + ... + 1552.

It is an arithmetic number, because the mean of its divisors is an integer number (218224).

2⁸⁷⁰¹⁵⁷ is an apocalyptic number.

It is an amenable number.

870157 is a deficient number, since it is larger than the sum of its proper divisors (2739).

870157 is a wasteful number, since it uses less digits than its factorization.

870157 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2738.

The product of its (nonzero) digits is 1960, while the sum is 28.

The square root of 870157 is about 932.8220623463. The cubic root of 870157 is about 95.4697692203.

The spelling of 870157 in words is "eight hundred seventy thousand, one hundred fifty-seven".