64339718 has 8 divisors (see below), whose sum is σ = 97831848. Its totient is φ = 31729104.

The previous prime is 64339711. The next prime is 64339729. The reversal of 64339718 is 81793346.

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

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64339711) 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, 220196 + ... + 220487.

It is an arithmetic number, because the mean of its divisors is an integer number (12228981).

Almost surely, 2^64339718 is an apocalyptic number.

64339718 is a deficient number, since it is larger than the sum of its proper divisors (33492130).

64339718 is a wasteful number, since it uses less digits than its factorization.

64339718 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 440758.

The product of its digits is 108864, while the sum is 41.

The square root of 64339718 is about 8021.2042736736. The cubic root of 64339718 is about 400.7064972527.

The spelling of 64339718 in words is "sixty-four million, three hundred thirty-nine thousand, seven hundred eighteen".