64945512 has 48 divisors (see below), whose sum is σ = 178532640. Its totient is φ = 21323808.

The previous prime is 64945499. The next prime is 64945549. The reversal of 64945512 is 21554946.

64945512 is a `hidden beast` number, since 649 + 4 + 5 + 5 + 1 + 2 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

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, 1908 + ... + 11555.

It is an arithmetic number, because the mean of its divisors is an integer number (3719430).

Almost surely, 2^64945512 is an apocalyptic number.

It is an amenable number.

64945512 is an abundant number, since it is smaller than the sum of its proper divisors (113587128).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

64945512 is a wasteful number, since it uses less digits than its factorization.

64945512 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13542 (or 13535 counting only the distinct ones).

The product of its digits is 43200, while the sum is 36.

The square root of 64945512 is about 8058.8778375156. The cubic root of 64945512 is about 401.9601950637.

The spelling of 64945512 in words is "sixty-four million, nine hundred forty-five thousand, five hundred twelve".