66782359 has 16 divisors (see below), whose sum is σ = 80974080. Its totient is φ = 53801280.

The previous prime is 66782357. The next prime is 66782377. The reversal of 66782359 is 95328766.

It is a cyclic number.

It is not a de Polignac number, because 66782359 - 2¹ = 66782357 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66782357) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 15507 + ... + 19339.

It is an arithmetic number, because the mean of its divisors is an integer number (5060880).

Almost surely, 2^66782359 is an apocalyptic number.

66782359 is a deficient number, since it is larger than the sum of its proper divisors (14191721).

66782359 is a wasteful number, since it uses less digits than its factorization.

66782359 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3990.

The product of its digits is 544320, while the sum is 46.

The square root of 66782359 is about 8172.0474178752. The cubic root of 66782359 is about 405.7145522015.

The spelling of 66782359 in words is "sixty-six million, seven hundred eighty-two thousand, three hundred fifty-nine".