66135622 has 16 divisors (see below), whose sum is σ = 114101280. Its totient is φ = 28162368.

The previous prime is 66135611. The next prime is 66135647. The reversal of 66135622 is 22653166.

66135622 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

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, 12847 + ... + 17242.

It is an arithmetic number, because the mean of its divisors is an integer number (7131330).

Almost surely, 2^66135622 is an apocalyptic number.

66135622 is a deficient number, since it is larger than the sum of its proper divisors (47965658).

66135622 is a wasteful number, since it uses less digits than its factorization.

66135622 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30255.

The product of its digits is 12960, while the sum is 31.

The square root of 66135622 is about 8132.3810781345. The cubic root of 66135622 is about 404.4006212888.

Adding to 66135622 its reverse (22653166), we get a palindrome (88788788).

The spelling of 66135622 in words is "sixty-six million, one hundred thirty-five thousand, six hundred twenty-two".