618344 has 16 divisors (see below), whose sum is σ = 1191300. Its totient is φ = 300672.

The previous prime is 618337. The next prime is 618347. The reversal of 618344 is 443816.

It can be written as a sum of positive squares in 2 ways, for example, as 504100 + 114244 = 710^2 + 338^2 .

It is an Ulam number.

It is not an unprimeable number, because it can be changed into a prime (618347) by changing a digit.

618344 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 (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 749 + ... + 1340.

2⁶¹⁸³⁴⁴ is an apocalyptic number.

It is an amenable number.

618344 is a deficient number, since it is larger than the sum of its proper divisors (572956).

618344 is a wasteful number, since it uses less digits than its factorization.

618344 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2132 (or 2128 counting only the distinct ones).

The product of its digits is 2304, while the sum is 26.

The square root of 618344 is about 786.3485232389. The cubic root of 618344 is about 85.1942041654.

The spelling of 618344 in words is "six hundred eighteen thousand, three hundred forty-four".