618864 has 20 divisors (see below), whose sum is σ = 1598856. Its totient is φ = 206272.

The previous prime is 618859. The next prime is 618869. The reversal of 618864 is 468816.

It is an interprime number because it is at equal distance from previous prime (618859) and next prime (618869).

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

It is a plaindrome in base 13.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (618869) 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, 6399 + ... + 6494.

2⁶¹⁸⁸⁶⁴ is an apocalyptic number.

It is an amenable number.

618864 is an abundant number, since it is smaller than the sum of its proper divisors (979992).

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

618864 is a wasteful number, since it uses less digits than its factorization.

618864 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12904 (or 12898 counting only the distinct ones).

The product of its digits is 9216, while the sum is 33.

The square root of 618864 is about 786.6790959470. The cubic root of 618864 is about 85.2180789953.

The spelling of 618864 in words is "six hundred eighteen thousand, eight hundred sixty-four".