66332444 has 6 divisors (see below), whose sum is σ = 116081784. Its totient is φ = 33166220.

The previous prime is 66332443. The next prime is 66332459. The reversal of 66332444 is 44423366.

It is a self number, because there is not a number n which added to its sum of digits gives 66332444.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66332443) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8291552 + ... + 8291559.

It is an arithmetic number, because the mean of its divisors is an integer number (19346964).

Almost surely, 2^66332444 is an apocalyptic number.

It is an amenable number.

66332444 is a deficient number, since it is larger than the sum of its proper divisors (49749340).

66332444 is a wasteful number, since it uses less digits than its factorization.

66332444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16583115 (or 16583113 counting only the distinct ones).

The product of its digits is 41472, while the sum is 32.

The square root of 66332444 is about 8144.4732180786. The cubic root of 66332444 is about 404.8013942653.

The spelling of 66332444 in words is "sixty-six million, three hundred thirty-two thousand, four hundred forty-four".