66117337 has 16 divisors (see below), whose sum is σ = 78103872. Its totient is φ = 55177920.

The previous prime is 66117323. The next prime is 66117349. The reversal of 66117337 is 73371166.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 66117337 - 2¹¹ = 66115289 is a prime.

It is not an unprimeable number, because it can be changed into a prime (66117367) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 26998 + ... + 29344.

It is an arithmetic number, because the mean of its divisors is an integer number (4881492).

Almost surely, 2^66117337 is an apocalyptic number.

It is an amenable number.

66117337 is a deficient number, since it is larger than the sum of its proper divisors (11986535).

66117337 is a wasteful number, since it uses less digits than its factorization.

66117337 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2568.

The product of its digits is 15876, while the sum is 34.

The square root of 66117337 is about 8131.2567909272. The cubic root of 66117337 is about 404.3633486526.

The spelling of 66117337 in words is "sixty-six million, one hundred seventeen thousand, three hundred thirty-seven".