66242585 has 8 divisors (see below), whose sum is σ = 79652160. Its totient is φ = 52886704.

The previous prime is 66242563. The next prime is 66242597. The reversal of 66242585 is 58524266.

66242585 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 66242585 - 2⁸ = 66242329 is a prime.

It is a super-3 number, since 3×66242585³ (a number of 24 digits) contains 333 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10655 + ... + 15684.

It is an arithmetic number, because the mean of its divisors is an integer number (9956520).

Almost surely, 2^66242585 is an apocalyptic number.

It is an amenable number.

66242585 is a deficient number, since it is larger than the sum of its proper divisors (13409575).

66242585 is a wasteful number, since it uses less digits than its factorization.

66242585 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26847.

The product of its digits is 115200, while the sum is 38.

The square root of 66242585 is about 8138.9547854746. The cubic root of 66242585 is about 404.6185200228.

The spelling of 66242585 in words is "sixty-six million, two hundred forty-two thousand, five hundred eighty-five".