64599745 has 16 divisors (see below), whose sum is σ = 93806208. Its totient is φ = 41690880.

The previous prime is 64599737. The next prime is 64599751. The reversal of 64599745 is 54799546.

It is a happy number.

It is not a de Polignac number, because 64599745 - 2³ = 64599737 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 53691 + ... + 54880.

It is an arithmetic number, because the mean of its divisors is an integer number (5862888).

Almost surely, 2^64599745 is an apocalyptic number.

It is an amenable number.

64599745 is a deficient number, since it is larger than the sum of its proper divisors (29206463).

64599745 is a wasteful number, since it uses less digits than its factorization.

64599745 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 108600.

The product of its digits is 1360800, while the sum is 49.

The square root of 64599745 is about 8037.3966556342. The cubic root of 64599745 is about 401.2455860127.

The spelling of 64599745 in words is "sixty-four million, five hundred ninety-nine thousand, seven hundred forty-five".