66285445 has 16 divisors (see below), whose sum is σ = 83525760. Its totient is φ = 50428224.

The previous prime is 66285419. The next prime is 66285449. The reversal of 66285445 is 54458266.

It is a cyclic number.

It is not a de Polignac number, because 66285445 - 2²³ = 57896837 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 66285398 and 66285407.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66285449) 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 15 ways as a sum of consecutive naturals, for example, 6304 + ... + 13126.

It is an arithmetic number, because the mean of its divisors is an integer number (5220360).

Almost surely, 2^66285445 is an apocalyptic number.

It is an amenable number.

66285445 is a deficient number, since it is larger than the sum of its proper divisors (17240315).

66285445 is a wasteful number, since it uses less digits than its factorization.

66285445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6924.

The product of its digits is 230400, while the sum is 40.

The square root of 66285445 is about 8141.5873759360. The cubic root of 66285445 is about 404.7057660693.

The spelling of 66285445 in words is "sixty-six million, two hundred eighty-five thousand, four hundred forty-five".