66162605 has 16 divisors (see below), whose sum is σ = 84616704. Its totient is φ = 49547520.

The previous prime is 66162583. The next prime is 66162611. The reversal of 66162605 is 50626166.

It is not a de Polignac number, because 66162605 - 2¹⁰ = 66161581 is a prime.

It is a Duffinian number.

It is a congruent 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 15 ways as a sum of consecutive naturals, for example, 716 + ... + 11525.

It is an arithmetic number, because the mean of its divisors is an integer number (5288544).

Almost surely, 2^66162605 is an apocalyptic number.

It is an amenable number.

66162605 is a deficient number, since it is larger than the sum of its proper divisors (18454099).

66162605 is a wasteful number, since it uses less digits than its factorization.

66162605 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12316.

The product of its (nonzero) digits is 12960, while the sum is 32.

The square root of 66162605 is about 8134.0398941731. The cubic root of 66162605 is about 404.4556116151.

The spelling of 66162605 in words is "sixty-six million, one hundred sixty-two thousand, six hundred five".