66883444 has 12 divisors (see below), whose sum is σ = 119536704. Its totient is φ = 32730104.

The previous prime is 66883429. The next prime is 66883463. The reversal of 66883444 is 44438866.

It is a super-2 number, since 2×66883444² = 8946790162602272, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 66883444.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 177694 + ... + 178069.

It is an arithmetic number, because the mean of its divisors is an integer number (9961392).

Almost surely, 2^66883444 is an apocalyptic number.

It is an amenable number.

66883444 is a deficient number, since it is larger than the sum of its proper divisors (52653260).

66883444 is a wasteful number, since it uses less digits than its factorization.

66883444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 355814 (or 355812 counting only the distinct ones).

The product of its digits is 442368, while the sum is 43.

The square root of 66883444 is about 8178.2298818265. The cubic root of 66883444 is about 405.9191520445.

The spelling of 66883444 in words is "sixty-six million, eight hundred eighty-three thousand, four hundred forty-four".