66704782 has 16 divisors (see below), whose sum is σ = 107775360. Its totient is φ = 30861432.

The previous prime is 66704779. The next prime is 66704783. The reversal of 66704782 is 28740766.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66704783) 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, 18778 + ... + 22045.

It is an arithmetic number, because the mean of its divisors is an integer number (6735960).

Almost surely, 2^66704782 is an apocalyptic number.

66704782 is a deficient number, since it is larger than the sum of its proper divisors (41070578).

66704782 is a wasteful number, since it uses less digits than its factorization.

66704782 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40887.

The product of its (nonzero) digits is 112896, while the sum is 40.

The square root of 66704782 is about 8167.2995537081. The cubic root of 66704782 is about 405.5573933682.

The spelling of 66704782 in words is "sixty-six million, seven hundred four thousand, seven hundred eighty-two".