66544283 has 8 divisors (see below), whose sum is σ = 72360288. Its totient is φ = 60827904.

The previous prime is 66544279. The next prime is 66544297. The reversal of 66544283 is 38244566.

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 66544283 - 2² = 66544279 is a prime.

It is not an unprimeable number, because it can be changed into a prime (66544223) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 23510 + ... + 26187.

It is an arithmetic number, because the mean of its divisors is an integer number (9045036).

Almost surely, 2^66544283 is an apocalyptic number.

66544283 is a deficient number, since it is larger than the sum of its proper divisors (5816005).

66544283 is a wasteful number, since it uses less digits than its factorization.

66544283 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49813.

The product of its digits is 138240, while the sum is 38.

The square root of 66544283 is about 8157.4679282238. The cubic root of 66544283 is about 405.2318603264.

The spelling of 66544283 in words is "sixty-six million, five hundred forty-four thousand, two hundred eighty-three".