867618 has 16 divisors (see below), whose sum is σ = 1928160. Its totient is φ = 289188.

The previous prime is 867617. The next prime is 867619. The reversal of 867618 is 816768.

867618 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (867617) and next prime (867619).

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 867618.

It is not an unprimeable number, because it can be changed into a prime (867617) 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, 7980 + ... + 8087.

It is an arithmetic number, because the mean of its divisors is an integer number (120510).

2⁸⁶⁷⁶¹⁸ is an apocalyptic number.

867618 is an abundant number, since it is smaller than the sum of its proper divisors (1060542).

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

867618 is a wasteful number, since it uses less digits than its factorization.

867618 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16078 (or 16072 counting only the distinct ones).

The product of its digits is 16128, while the sum is 36.

The square root of 867618 is about 931.4601440749. The cubic root of 867618 is about 95.3768228179.

It can be divided in two parts, 867 and 618, that added together give a triangular number (1485 = T₅₄).

The spelling of 867618 in words is "eight hundred sixty-seven thousand, six hundred eighteen".