66482905 has 4 divisors (see below), whose sum is σ = 79779492. Its totient is φ = 53186320.

The previous prime is 66482891. The next prime is 66482939. The reversal of 66482905 is 50928466.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 32993536 + 33489369 = 5744^2 + 5787^2 .

It is not a de Polignac number, because 66482905 - 2⁷ = 66482777 is a prime.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 6648286 + ... + 6648295.

It is an arithmetic number, because the mean of its divisors is an integer number (19944873).

Almost surely, 2^66482905 is an apocalyptic number.

It is an amenable number.

66482905 is a deficient number, since it is larger than the sum of its proper divisors (13296587).

66482905 is a wasteful number, since it uses less digits than its factorization.

66482905 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13296586.

The product of its (nonzero) digits is 103680, while the sum is 40.

The square root of 66482905 is about 8153.7049860784. The cubic root of 66482905 is about 405.1072316780.

The spelling of 66482905 in words is "sixty-six million, four hundred eighty-two thousand, nine hundred five".