66444036 has 24 divisors (see below), whose sum is σ = 160038144. Its totient is φ = 21433440.

The previous prime is 66444031. The next prime is 66444061. The reversal of 66444036 is 63044466.

It is a junction number, because it is equal to n+sod(n) for n = 66443988 and 66444006.

It is not an unprimeable number, because it can be changed into a prime (66444031) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 88935 + ... + 89678.

It is an arithmetic number, because the mean of its divisors is an integer number (6668256).

Almost surely, 2^66444036 is an apocalyptic number.

It is an amenable number.

66444036 is an abundant number, since it is smaller than the sum of its proper divisors (93594108).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

66444036 is a wasteful number, since it uses less digits than its factorization.

66444036 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 178651 (or 178649 counting only the distinct ones).

The product of its (nonzero) digits is 41472, while the sum is 33.

The square root of 66444036 is about 8151.3211199167. The cubic root of 66444036 is about 405.0282681077.

The spelling of 66444036 in words is "sixty-six million, four hundred forty-four thousand, thirty-six".