64743808 has 16 divisors (see below), whose sum is σ = 128982060. Its totient is φ = 32371840.

The previous prime is 64743799. The next prime is 64743829. The reversal of 64743808 is 80834746.

It is a tau number, because it is divible by the number of its divisors (16).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 252778 + ... + 253033.

Almost surely, 2^64743808 is an apocalyptic number.

It is an amenable number.

64743808 is a deficient number, since it is larger than the sum of its proper divisors (64238252).

64743808 is an equidigital number, since it uses as much as digits as its factorization.

64743808 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 505825 (or 505813 counting only the distinct ones).

The product of its (nonzero) digits is 129024, while the sum is 40.

The square root of 64743808 is about 8046.3537083576. The cubic root of 64743808 is about 401.5436353122.

The spelling of 64743808 in words is "sixty-four million, seven hundred forty-three thousand, eight hundred eight".