64217418 has 16 divisors (see below), whose sum is σ = 128687616. Its totient is φ = 21363680.

The previous prime is 64217411. The next prime is 64217437. The reversal of 64217418 is 81471246.

It is not an unprimeable number, because it can be changed into a prime (64217411) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7146 + ... + 13397.

It is an arithmetic number, because the mean of its divisors is an integer number (8042976).

Almost surely, 2^64217418 is an apocalyptic number.

64217418 is an abundant number, since it is smaller than the sum of its proper divisors (64470198).

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

64217418 is a wasteful number, since it uses less digits than its factorization.

64217418 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21069.

The product of its digits is 10752, while the sum is 33.

The square root of 64217418 is about 8013.5771038906. The cubic root of 64217418 is about 400.4524422138.

The spelling of 64217418 in words is "sixty-four million, two hundred seventeen thousand, four hundred eighteen".