64944944 has 10 divisors (see below), whose sum is σ = 125830860. Its totient is φ = 32472464.

The previous prime is 64944937. The next prime is 64944973. The reversal of 64944944 is 44944946.

It is a junction number, because it is equal to n+sod(n) for n = 64944895 and 64944904.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2029514 + ... + 2029545.

It is an arithmetic number, because the mean of its divisors is an integer number (12583086).

Almost surely, 2^64944944 is an apocalyptic number.

It is an amenable number.

64944944 is a deficient number, since it is larger than the sum of its proper divisors (60885916).

64944944 is a wasteful number, since it uses less digits than its factorization.

64944944 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4059067 (or 4059061 counting only the distinct ones).

The product of its digits is 497664, while the sum is 44.

The square root of 64944944 is about 8058.8425968001. The cubic root of 64944944 is about 401.9590232401.

The spelling of 64944944 in words is "sixty-four million, nine hundred forty-four thousand, nine hundred forty-four".