66011135 has 4 divisors (see below), whose sum is σ = 79213368. Its totient is φ = 52808904.

The previous prime is 66011131. The next prime is 66011137. The reversal of 66011135 is 53111066.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 66011135 - 2² = 66011131 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 66011135.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66011131) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6601109 + ... + 6601118.

It is an arithmetic number, because the mean of its divisors is an integer number (19803342).

Almost surely, 2^66011135 is an apocalyptic number.

66011135 is a deficient number, since it is larger than the sum of its proper divisors (13202233).

66011135 is a wasteful number, since it uses less digits than its factorization.

66011135 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13202232.

The product of its (nonzero) digits is 540, while the sum is 23.

The square root of 66011135 is about 8124.7236876093. The cubic root of 66011135 is about 404.1467276568.

The spelling of 66011135 in words is "sixty-six million, eleven thousand, one hundred thirty-five".