64818339 has 16 divisors (see below), whose sum is σ = 89107872. Its totient is φ = 41879808.

The previous prime is 64818293. The next prime is 64818343. The reversal of 64818339 is 93381846.

It is a happy number.

It is not a de Polignac number, because 64818339 - 2⁹ = 64817827 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 64818339.

It is not an unprimeable number, because it can be changed into a prime (64818839) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 31527 + ... + 33519.

It is an arithmetic number, because the mean of its divisors is an integer number (5569242).

Almost surely, 2^64818339 is an apocalyptic number.

64818339 is a deficient number, since it is larger than the sum of its proper divisors (24289533).

64818339 is a wasteful number, since it uses less digits than its factorization.

64818339 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2326.

The product of its digits is 124416, while the sum is 42.

The square root of 64818339 is about 8050.9837287129. The cubic root of 64818339 is about 401.6976576200.

The spelling of 64818339 in words is "sixty-four million, eight hundred eighteen thousand, three hundred thirty-nine".