66382645 has 8 divisors (see below), whose sum is σ = 91039104. Its totient is φ = 45519504.

The previous prime is 66382643. The next prime is 66382651. The reversal of 66382645 is 54628366.

It is a happy number.

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 66382645 - 2¹ = 66382643 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 66382598 and 66382607.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66382643) 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, 948289 + ... + 948358.

It is an arithmetic number, because the mean of its divisors is an integer number (11379888).

Almost surely, 2^66382645 is an apocalyptic number.

It is an amenable number.

66382645 is a deficient number, since it is larger than the sum of its proper divisors (24656459).

66382645 is a wasteful number, since it uses less digits than its factorization.

66382645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1896659.

The product of its digits is 207360, while the sum is 40.

The square root of 66382645 is about 8147.5545410878. The cubic root of 66382645 is about 404.9034876464.

The spelling of 66382645 in words is "sixty-six million, three hundred eighty-two thousand, six hundred forty-five".