64513144 has 16 divisors (see below), whose sum is σ = 122161320. Its totient is φ = 31936800.

The previous prime is 64513133. The next prime is 64513159. The reversal of 64513144 is 44131546.

64513144 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 39114 + ... + 40729.

Almost surely, 2^64513144 is an apocalyptic number.

It is an amenable number.

64513144 is a deficient number, since it is larger than the sum of its proper divisors (57648176).

64513144 is a wasteful number, since it uses less digits than its factorization.

64513144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 79950 (or 79946 counting only the distinct ones).

The product of its digits is 5760, while the sum is 28.

The square root of 64513144 is about 8032.0074701160. The cubic root of 64513144 is about 401.0662054895.

The spelling of 64513144 in words is "sixty-four million, five hundred thirteen thousand, one hundred forty-four".