870018 has 16 divisors (see below), whose sum is σ = 1787520. Its totient is φ = 282096.

The previous prime is 870013. The next prime is 870031. The reversal of 870018 is 810078.

It is a self number, because there is not a number n which added to its sum of digits gives 870018.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 870018.

It is not an unprimeable number, because it can be changed into a prime (870013) by changing a digit.

870018 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1738 + ... + 2181.

It is an arithmetic number, because the mean of its divisors is an integer number (111720).

2⁸⁷⁰⁰¹⁸ is an apocalyptic number.

870018 is an abundant number, since it is smaller than the sum of its proper divisors (917502).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

870018 is a wasteful number, since it uses less digits than its factorization.

870018 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3961.

The product of its (nonzero) digits is 448, while the sum is 24.

The square root of 870018 is about 932.7475542718. The cubic root of 870018 is about 95.4646854617.

The spelling of 870018 in words is "eight hundred seventy thousand, eighteen".