66800044 has 12 divisors (see below), whose sum is σ = 117793368. Its totient is φ = 33144800.

The previous prime is 66800033. The next prime is 66800051. The reversal of 66800044 is 44000866.

It is a junction number, because it is equal to n+sod(n) for n = 66799985 and 66800021.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 63217 + ... + 64264.

It is an arithmetic number, because the mean of its divisors is an integer number (9816114).

Almost surely, 2^66800044 is an apocalyptic number.

It is an amenable number.

66800044 is a deficient number, since it is larger than the sum of its proper divisors (50993324).

66800044 is a wasteful number, since it uses less digits than its factorization.

66800044 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 127616 (or 127614 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 28.

The square root of 66800044 is about 8173.1293884289. The cubic root of 66800044 is about 405.7503622004.

The spelling of 66800044 in words is "sixty-six million, eight hundred thousand, forty-four".