64745818 has 8 divisors (see below), whose sum is σ = 97311060. Its totient is φ = 32308800.

The previous prime is 64745771. The next prime is 64745869. The reversal of 64745818 is 81854746.

It can be written as a sum of positive squares in 2 ways, for example, as 54804409 + 9941409 = 7403^2 + 3153^2 .

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 30783 + ... + 32818.

Almost surely, 2^64745818 is an apocalyptic number.

64745818 is a deficient number, since it is larger than the sum of its proper divisors (32565242).

64745818 is a wasteful number, since it uses less digits than its factorization.

64745818 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64112.

The product of its digits is 215040, while the sum is 43.

The square root of 64745818 is about 8046.4786086834. The cubic root of 64745818 is about 401.5477906354.

The spelling of 64745818 in words is "sixty-four million, seven hundred forty-five thousand, eight hundred eighteen".