66662444 has 12 divisors (see below), whose sum is σ = 116915568. Its totient is φ = 33258000.

The previous prime is 66662437. The next prime is 66662461. The reversal of 66662444 is 44426666.

66662444 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 66662398 and 66662407.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16232 + ... + 19919.

It is an arithmetic number, because the mean of its divisors is an integer number (9742964).

Almost surely, 2^66662444 is an apocalyptic number.

It is an amenable number.

66662444 is a deficient number, since it is larger than the sum of its proper divisors (50253124).

66662444 is a wasteful number, since it uses less digits than its factorization.

66662444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36616 (or 36614 counting only the distinct ones).

The product of its digits is 165888, while the sum is 38.

The square root of 66662444 is about 8164.7072207153. The cubic root of 66662444 is about 405.4715718203.

The spelling of 66662444 in words is "sixty-six million, six hundred sixty-two thousand, four hundred forty-four".