66226211 has 8 divisors (see below), whose sum is σ = 67156320. Its totient is φ = 65302848.

The previous prime is 66226207. The next prime is 66226231. The reversal of 66226211 is 11262266.

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 66226211 - 2² = 66226207 is a prime.

It is a super-2 number, since 2×66226211² = 8771822046833042, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (66226201) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19970 + ... + 23048.

It is an arithmetic number, because the mean of its divisors is an integer number (8394540).

Almost surely, 2^66226211 is an apocalyptic number.

66226211 is a deficient number, since it is larger than the sum of its proper divisors (930109).

66226211 is a wasteful number, since it uses less digits than its factorization.

66226211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3373.

The product of its digits is 1728, while the sum is 26.

The square root of 66226211 is about 8137.9488201880. The cubic root of 66226211 is about 404.5851790856.

Adding to 66226211 its reverse (11262266), we get a palindrome (77488477).

The spelling of 66226211 in words is "sixty-six million, two hundred twenty-six thousand, two hundred eleven".