44646664 has 8 divisors (see below), whose sum is σ = 83712510. Its totient is φ = 22323328.

The previous prime is 44646649. The next prime is 44646677. The reversal of 44646664 is 46664644.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 33154564 + 11492100 = 5758^2 + 3390^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2790409 + ... + 2790424.

Almost surely, 2^44646664 is an apocalyptic number.

It is an amenable number.

44646664 is a deficient number, since it is larger than the sum of its proper divisors (39065846).

44646664 is a wasteful number, since it uses less digits than its factorization.

44646664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5580839 (or 5580835 counting only the distinct ones).

The product of its digits is 331776, while the sum is 40.

The square root of 44646664 is about 6681.8159208407. The cubic root of 44646664 is about 354.7559361913.

The spelling of 44646664 in words is "forty-four million, six hundred forty-six thousand, six hundred sixty-four".