66275695 has 16 divisors (see below), whose sum is σ = 82512288. Its totient is φ = 51062400.

The previous prime is 66275669. The next prime is 66275761. The reversal of 66275695 is 59657266.

It is not a de Polignac number, because 66275695 - 2⁷ = 66275567 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, 16912 + ... + 20458.

It is an arithmetic number, because the mean of its divisors is an integer number (5157018).

Almost surely, 2^66275695 is an apocalyptic number.

66275695 is a deficient number, since it is larger than the sum of its proper divisors (16236593).

66275695 is a wasteful number, since it uses less digits than its factorization.

66275695 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3690.

The product of its digits is 680400, while the sum is 46.

The square root of 66275695 is about 8140.9885763340. The cubic root of 66275695 is about 404.6859222222.

The spelling of 66275695 in words is "sixty-six million, two hundred seventy-five thousand, six hundred ninety-five".