618393 has 12 divisors (see below), whose sum is σ = 871728. Its totient is φ = 389880.

The previous prime is 618377. The next prime is 618407. The reversal of 618393 is 393816.

It is not a de Polignac number, because 618393 - 2⁴ = 618377 is a prime.

It is a super-3 number, since 3×618393³ = 709438820415433371, which contains 333 as substring.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 618393.

It is not an unprimeable number, because it can be changed into a prime (618323) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 798 + ... + 1368.

It is an arithmetic number, because the mean of its divisors is an integer number (72644).

2⁶¹⁸³⁹³ is an apocalyptic number.

It is an amenable number.

618393 is a deficient number, since it is larger than the sum of its proper divisors (253335).

618393 is a wasteful number, since it uses less digits than its factorization.

618393 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 612 (or 593 counting only the distinct ones).

The product of its digits is 3888, while the sum is 30.

The square root of 618393 is about 786.3796792898. The cubic root of 618393 is about 85.1964544801.

The spelling of 618393 in words is "six hundred eighteen thousand, three hundred ninety-three".