66413275 has 12 divisors (see below), whose sum is σ = 82455784. Its totient is φ = 53064000.

The previous prime is 66413159. The next prime is 66413287. The reversal of 66413275 is 57231466.

It is a happy number.

It is not a de Polignac number, because 66413275 - 2¹³ = 66405083 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 66413275.

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 11 ways as a sum of consecutive naturals, for example, 32020 + ... + 34030.

Almost surely, 2^66413275 is an apocalyptic number.

66413275 is a deficient number, since it is larger than the sum of its proper divisors (16042509).

66413275 is a wasteful number, since it uses less digits than its factorization.

66413275 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3342 (or 3337 counting only the distinct ones).

The product of its digits is 30240, while the sum is 34.

The square root of 66413275 is about 8149.4340294281. The cubic root of 66413275 is about 404.9657543568.

The spelling of 66413275 in words is "sixty-six million, four hundred thirteen thousand, two hundred seventy-five".