870618 has 32 divisors (see below), whose sum is σ = 2096640. Its totient is φ = 235440.

The previous prime is 870613. The next prime is 870629. The reversal of 870618 is 816078.

870618 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 870618.

It is not an unprimeable number, because it can be changed into a prime (870613) by changing a digit.

870618 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 15 ways as a sum of consecutive naturals, for example, 253 + ... + 1343.

It is an arithmetic number, because the mean of its divisors is an integer number (65520).

2⁸⁷⁰⁶¹⁸ is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 870618, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1048320).

870618 is an abundant number, since it is smaller than the sum of its proper divisors (1226022).

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

870618 is a wasteful number, since it uses less digits than its factorization.

870618 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1122.

The product of its (nonzero) digits is 2688, while the sum is 30.

The square root of 870618 is about 933.0691292718. The cubic root of 870618 is about 95.4866258694.

The spelling of 870618 in words is "eight hundred seventy thousand, six hundred eighteen".