64818 has 24 divisors (see below), whose sum is σ = 151788. Its totient is φ = 19872.

The previous prime is 64817. The next prime is 64849. The reversal of 64818 is 81846.

64818 is a `hidden beast` number, since 648 + 18 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 56169 + 8649 = 237^2 + 93^2 .

It is a nialpdrome in base 16.

It is a junction number, because it is equal to n+sod(n) for n = 64791 and 64800.

It is not an unprimeable number, because it can be changed into a prime (64811) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 96 + ... + 372.

2⁶⁴⁸¹⁸ is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 64818, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (75894).

64818 is an abundant number, since it is smaller than the sum of its proper divisors (86970).

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

64818 is a wasteful number, since it uses less digits than its factorization.

64818 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 298 (or 295 counting only the distinct ones).

The product of its digits is 1536, while the sum is 27.

The square root of 64818 is about 254.5937941113. The cubic root of 64818 is about 40.1696957326.

It can be divided in two parts, 648 and 18, that multiplied together give a square (11664 = 108²).

The spelling of 64818 in words is "sixty-four thousand, eight hundred eighteen".