618612 has 12 divisors (see below), whose sum is σ = 1443456. Its totient is φ = 206200.

The previous prime is 618593. The next prime is 618619. The reversal of 618612 is 216816.

It is a tau number, because it is divible by the number of its divisors (12).

It is a Smith number, since the sum of its digits (24) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (618619) by changing a digit.

618612 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 3 ways as a sum of consecutive naturals, for example, 25764 + ... + 25787.

It is an arithmetic number, because the mean of its divisors is an integer number (120288).

2⁶¹⁸⁶¹² is an apocalyptic number.

It is an amenable number.

618612 is an abundant number, since it is smaller than the sum of its proper divisors (824844).

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

618612 is a wasteful number, since it uses less digits than its factorization.

618612 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51558 (or 51556 counting only the distinct ones).

The product of its digits is 576, while the sum is 24.

The square root of 618612 is about 786.5189126779. The cubic root of 618612 is about 85.2065105563.

The spelling of 618612 in words is "six hundred eighteen thousand, six hundred twelve".