918568 has 32 divisors (see below), whose sum is σ = 2016000. Its totient is φ = 384192.

The previous prime is 918563. The next prime is 918581. The reversal of 918568 is 865819.

It is not an unprimeable number, because it can be changed into a prime (918563) 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, 2458 + ... + 2806.

It is an arithmetic number, because the mean of its divisors is an integer number (63000).

2⁹¹⁸⁵⁶⁸ is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 918568, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1008000).

918568 is an abundant number, since it is smaller than the sum of its proper divisors (1097432).

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

918568 is a wasteful number, since it uses less digits than its factorization.

918568 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 409 (or 405 counting only the distinct ones).

The product of its digits is 17280, while the sum is 37.

The square root of 918568 is about 958.4195323552. The cubic root of 918568 is about 97.2083945625.

The spelling of 918568 in words is "nine hundred eighteen thousand, five hundred sixty-eight".