870001 has 8 divisors (see below), whose sum is σ = 957600. Its totient is φ = 783840.

The previous prime is 869989. The next prime is 870007. The reversal of 870001 is 100078.

870001 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is not a de Polignac number, because 870001 - 2⁹ = 869489 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (870007) 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, 1245 + ... + 1813.

It is an arithmetic number, because the mean of its divisors is an integer number (119700).

2⁸⁷⁰⁰⁰¹ is an apocalyptic number.

It is an amenable number.

870001 is a deficient number, since it is larger than the sum of its proper divisors (87599).

870001 is a wasteful number, since it uses less digits than its factorization.

870001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 719.

The product of its (nonzero) digits is 56, while the sum is 16.

The square root of 870001 is about 932.7384413650. The cubic root of 870001 is about 95.4640636698.

Adding to 870001 its reverse (100078), we get a palindrome (970079).

The spelling of 870001 in words is "eight hundred seventy thousand, one".