64518345 has 12 divisors (see below), whose sum is σ = 111831876. Its totient is φ = 34409760.

The previous prime is 64518323. The next prime is 64518397. The reversal of 64518345 is 54381546.

It is a happy number.

64518345 is a `hidden beast` number, since 645 + 1 + 8 + 3 + 4 + 5 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 39388176 + 25130169 = 6276^2 + 5013^2 .

It is not a de Polignac number, because 64518345 - 2⁸ = 64518089 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 716826 + ... + 716915.

It is an arithmetic number, because the mean of its divisors is an integer number (9319323).

Almost surely, 2^64518345 is an apocalyptic number.

It is an amenable number.

64518345 is a deficient number, since it is larger than the sum of its proper divisors (47313531).

64518345 is a wasteful number, since it uses less digits than its factorization.

64518345 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1433752 (or 1433749 counting only the distinct ones).

The product of its digits is 57600, while the sum is 36.

The square root of 64518345 is about 8032.3312307200. The cubic root of 64518345 is about 401.0769830828.

The spelling of 64518345 in words is "sixty-four million, five hundred eighteen thousand, three hundred forty-five".