66242595 has 16 divisors (see below), whose sum is σ = 106388640. Its totient is φ = 35195904.

The previous prime is 66242563. The next prime is 66242597. The reversal of 66242595 is 59524266.

66242595 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 66242595 - 2⁵ = 66242563 is a prime.

It is not an unprimeable number, because it can be changed into a prime (66242597) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 4174 + ... + 12243.

It is an arithmetic number, because the mean of its divisors is an integer number (6649290).

Almost surely, 2^66242595 is an apocalyptic number.

66242595 is a deficient number, since it is larger than the sum of its proper divisors (40146045).

66242595 is a wasteful number, since it uses less digits than its factorization.

66242595 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16694.

The product of its digits is 129600, while the sum is 39.

The square root of 66242595 is about 8138.9553998041. The cubic root of 66242595 is about 404.6185403833.

The spelling of 66242595 in words is "sixty-six million, two hundred forty-two thousand, five hundred ninety-five".