66700211 has 8 divisors (see below), whose sum is σ = 67813200. Its totient is φ = 65594752.

The previous prime is 66700201. The next prime is 66700217. The reversal of 66700211 is 11200766.

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 66700211 - 2¹⁰ = 66699187 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (66700217) 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 7 ways as a sum of consecutive naturals, for example, 17615 + ... + 21063.

It is an arithmetic number, because the mean of its divisors is an integer number (8476650).

Almost surely, 2^66700211 is an apocalyptic number.

66700211 is a deficient number, since it is larger than the sum of its proper divisors (1112989).

66700211 is a wasteful number, since it uses less digits than its factorization.

66700211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3765.

The product of its (nonzero) digits is 504, while the sum is 23.

The square root of 66700211 is about 8167.0197134573. The cubic root of 66700211 is about 405.5481294387.

Adding to 66700211 its reverse (11200766), we get a palindrome (77900977).

The spelling of 66700211 in words is "sixty-six million, seven hundred thousand, two hundred eleven".