66182505 has 16 divisors (see below), whose sum is σ = 106078464. Its totient is φ = 35235200.

The previous prime is 66182497. The next prime is 66182507. The reversal of 66182505 is 50528166.

It is not a de Polignac number, because 66182505 - 2³ = 66182497 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (66182507) 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, 5680 + ... + 12830.

It is an arithmetic number, because the mean of its divisors is an integer number (6629904).

Almost surely, 2^66182505 is an apocalyptic number.

It is an amenable number.

66182505 is a deficient number, since it is larger than the sum of its proper divisors (39895959).

66182505 is a wasteful number, since it uses less digits than its factorization.

66182505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7776.

The product of its (nonzero) digits is 14400, while the sum is 33.

The square root of 66182505 is about 8135.2630565950. The cubic root of 66182505 is about 404.4961574786.

The spelling of 66182505 in words is "sixty-six million, one hundred eighty-two thousand, five hundred five".