64378256 has 20 divisors (see below), whose sum is σ = 126491904. Its totient is φ = 31735200.

The previous prime is 64378183. The next prime is 64378277. The reversal of 64378256 is 65287346.

It is a happy number.

64378256 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Smith number, since the sum of its digits (41) coincides with the sum of the digits of its prime factors.

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, 27200 + ... + 29471.

Almost surely, 2^64378256 is an apocalyptic number.

It is an amenable number.

64378256 is a deficient number, since it is larger than the sum of its proper divisors (62113648).

64378256 is a wasteful number, since it uses less digits than its factorization.

64378256 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56750 (or 56744 counting only the distinct ones).

The product of its digits is 241920, while the sum is 41.

The square root of 64378256 is about 8023.6061717908. The cubic root of 64378256 is about 400.7864859196.

The spelling of 64378256 in words is "sixty-four million, three hundred seventy-eight thousand, two hundred fifty-six".