64845064 has 8 divisors (see below), whose sum is σ = 121584510. Its totient is φ = 32422528.

The previous prime is 64845061. The next prime is 64845083. The reversal of 64845064 is 46054846.

It can be written as a sum of positive squares in only one way, i.e., 58644964 + 6200100 = 7658^2 + 2490^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is not an unprimeable number, because it can be changed into a prime (64845061) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4052809 + ... + 4052824.

Almost surely, 2^64845064 is an apocalyptic number.

It is an amenable number.

64845064 is a deficient number, since it is larger than the sum of its proper divisors (56739446).

64845064 is a wasteful number, since it uses less digits than its factorization.

64845064 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8105639 (or 8105635 counting only the distinct ones).

The product of its (nonzero) digits is 92160, while the sum is 37.

The square root of 64845064 is about 8052.6432927331. The cubic root of 64845064 is about 401.7528575063.

The spelling of 64845064 in words is "sixty-four million, eight hundred forty-five thousand, sixty-four".