66044032 has 16 divisors (see below), whose sum is σ = 131572350. Its totient is φ = 33021952.

The previous prime is 66044023. The next prime is 66044039. The reversal of 66044032 is 23044066.

It can be written as a sum of positive squares in only one way, i.e., 41679936 + 24364096 = 6456^2 + 4936^2 .

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

It is a junction number, because it is equal to n+sod(n) for n = 66043988 and 66044006.

It is not an unprimeable number, because it can be changed into a prime (66044039) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 257857 + ... + 258112.

Almost surely, 2^66044032 is an apocalyptic number.

It is an amenable number.

66044032 is a deficient number, since it is larger than the sum of its proper divisors (65528318).

66044032 is an equidigital number, since it uses as much as digits as its factorization.

66044032 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 515983 (or 515971 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 25.

The square root of 66044032 is about 8126.7479350599. The cubic root of 66044032 is about 404.2138527306.

Adding to 66044032 its reverse (23044066), we get a palindrome (89088098).

The spelling of 66044032 in words is "sixty-six million, forty-four thousand, thirty-two", and thus it is an eban number.