918612 has 72 divisors (see below), whose sum is σ = 2620800. Its totient is φ = 269568.

The previous prime is 918587. The next prime is 918613. The reversal of 918612 is 216819.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (918613) by changing a digit.

918612 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 11589 + ... + 11667.

It is an arithmetic number, because the mean of its divisors is an integer number (36400).

2⁹¹⁸⁶¹² 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 918612, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1310400).

918612 is an abundant number, since it is smaller than the sum of its proper divisors (1702188).

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

918612 is a wasteful number, since it uses less digits than its factorization.

918612 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 125 (or 120 counting only the distinct ones).

The product of its digits is 864, while the sum is 27.

The square root of 918612 is about 958.4424865374. The cubic root of 918612 is about 97.2099466527.

The spelling of 918612 in words is "nine hundred eighteen thousand, six hundred twelve".