66683243 has 8 divisors (see below), whose sum is σ = 73278000. Its totient is φ = 60177280.

The previous prime is 66683219. The next prime is 66683269. The reversal of 66683243 is 34238666.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 66683243 - 2¹⁸ = 66421099 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 66683197 and 66683206.

It is not an unprimeable number, because it can be changed into a prime (66683273) 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, 20618 + ... + 23631.

It is an arithmetic number, because the mean of its divisors is an integer number (9159750).

Almost surely, 2^66683243 is an apocalyptic number.

66683243 is a deficient number, since it is larger than the sum of its proper divisors (6594757).

66683243 is a wasteful number, since it uses less digits than its factorization.

66683243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44397.

The product of its digits is 124416, while the sum is 38.

The square root of 66683243 is about 8165.9808351477. The cubic root of 66683243 is about 405.5137371224.

The spelling of 66683243 in words is "sixty-six million, six hundred eighty-three thousand, two hundred forty-three".