618436 has 24 divisors (see below), whose sum is σ = 1332800. Its totient is φ = 244512.

The previous prime is 618421. The next prime is 618437. The reversal of 618436 is 634816.

It is a super-3 number, since 3×618436³ = 709586823338597568, which contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is not an unprimeable number, because it can be changed into a prime (618437) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 486 + ... + 1213.

2⁶¹⁸⁴³⁶ is an apocalyptic number.

It is an amenable number.

618436 is an abundant number, since it is smaller than the sum of its proper divisors (714364).

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

618436 is a wasteful number, since it uses less digits than its factorization.

618436 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1723 (or 1721 counting only the distinct ones).

The product of its digits is 3456, while the sum is 28.

The square root of 618436 is about 786.4070192973. The cubic root of 618436 is about 85.1984291481.

The spelling of 618436 in words is "six hundred eighteen thousand, four hundred thirty-six".