618216 has 16 divisors (see below), whose sum is σ = 1545600. Its totient is φ = 206064.

The previous prime is 618199. The next prime is 618227. The reversal of 618216 is 612816.

It is a Harshad number since it is a multiple of its sum of digits (24), and also a Moran number because the ratio is a prime number: 25759 = 618216 / (6 + 1 + 8 + 2 + 1 + 6).

It is a nude number because it is divisible by every one of its digits.

It is an unprimeable 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, 12856 + ... + 12903.

It is an arithmetic number, because the mean of its divisors is an integer number (96600).

2⁶¹⁸²¹⁶ is an apocalyptic number.

It is an amenable number.

618216 is an abundant number, since it is smaller than the sum of its proper divisors (927384).

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

618216 is a wasteful number, since it uses less digits than its factorization.

618216 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25768 (or 25764 counting only the distinct ones).

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

The square root of 618216 is about 786.2671301791. The cubic root of 618216 is about 85.1883252314.

The spelling of 618216 in words is "six hundred eighteen thousand, two hundred sixteen".