618424 has 16 divisors (see below), whose sum is σ = 1210320. Its totient is φ = 295680.

The previous prime is 618421. The next prime is 618437. The reversal of 618424 is 424816.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (618421) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1497 + ... + 1864.

It is an arithmetic number, because the mean of its divisors is an integer number (75645).

2⁶¹⁸⁴²⁴ is an apocalyptic number.

It is an amenable number.

618424 is a deficient number, since it is larger than the sum of its proper divisors (591896).

618424 is a wasteful number, since it uses less digits than its factorization.

618424 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3390 (or 3386 counting only the distinct ones).

The product of its digits is 1536, while the sum is 25.

The square root of 618424 is about 786.3993896234. The cubic root of 618424 is about 85.1978780871.

The spelling of 618424 in words is "six hundred eighteen thousand, four hundred twenty-four".