870113 has 4 divisors (see below), whose sum is σ = 907968. Its totient is φ = 832260.

The previous prime is 870109. The next prime is 870127. The reversal of 870113 is 311078.

870113 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, and also an emirpimes, since its reverse is a distinct semiprime: 311078 = 2 ⋅155539.

It is a cyclic number.

It is not a de Polignac number, because 870113 - 2² = 870109 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (870173) 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, 18893 + ... + 18938.

It is an arithmetic number, because the mean of its divisors is an integer number (226992).

2⁸⁷⁰¹¹³ is an apocalyptic number.

It is an amenable number.

870113 is a deficient number, since it is larger than the sum of its proper divisors (37855).

870113 is a wasteful number, since it uses less digits than its factorization.

870113 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37854.

The product of its (nonzero) digits is 168, while the sum is 20.

The square root of 870113 is about 932.7984777003. The cubic root of 870113 is about 95.4681600316.

The spelling of 870113 in words is "eight hundred seventy thousand, one hundred thirteen".