64918 has 8 divisors (see below), whose sum is σ = 111312. Its totient is φ = 27816.

The previous prime is 64901. The next prime is 64919. The reversal of 64918 is 81946.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a nialpdrome in base 16.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64919) by changing a digit.

64918 is an untouchable number, because it is not equal to the sum of proper divisors of any 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, 2305 + ... + 2332.

It is an arithmetic number, because the mean of its divisors is an integer number (13914).

2⁶⁴⁹¹⁸ is an apocalyptic number.

64918 is a deficient number, since it is larger than the sum of its proper divisors (46394).

64918 is a wasteful number, since it uses less digits than its factorization.

64918 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4646.

The product of its digits is 1728, while the sum is 28.

The square root of 64918 is about 254.7901096982. The cubic root of 64918 is about 40.1903428037.

Adding to 64918 its sum of digits (28), we get a palindrome (64946).

Subtracting from 64918 its product of digits (1728), we obtain a triangular number (63190 = T₃₅₅).

The spelling of 64918 in words is "sixty-four thousand, nine hundred eighteen".