64518946 has 8 divisors (see below), whose sum is σ = 101872080. Its totient is φ = 30561588.

The previous prime is 64518943. The next prime is 64518959. The reversal of 64518946 is 64981546.

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

It is not an unprimeable number, because it can be changed into a prime (64518943) 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, 848896 + ... + 848971.

It is an arithmetic number, because the mean of its divisors is an integer number (12734010).

Almost surely, 2^64518946 is an apocalyptic number.

64518946 is a deficient number, since it is larger than the sum of its proper divisors (37353134).

64518946 is a wasteful number, since it uses less digits than its factorization.

64518946 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1697888.

The product of its digits is 207360, while the sum is 43.

The square root of 64518946 is about 8032.3686419387. The cubic root of 64518946 is about 401.0782284470.

It can be divided in two parts, 645 and 18946, that added together give a palindrome (19591).

The spelling of 64518946 in words is "sixty-four million, five hundred eighteen thousand, nine hundred forty-six".