66622411 has 2 divisors, whose sum is σ = 66622412. Its totient is φ = 66622410.

The previous prime is 66622399. The next prime is 66622433. The reversal of 66622411 is 11422666.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 66622411 - 2⁹ = 66621899 is a prime.

It is equal to p_3930841 and since 66622411 and 3930841 have the same sum of digits, it is a Honaker prime.

It is a self number, because there is not a number n which added to its sum of digits gives 66622411.

It is not a weakly prime, because it can be changed into another prime (66622471) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33311205 + 33311206.

It is an arithmetic number, because the mean of its divisors is an integer number (33311206).

Almost surely, 2^66622411 is an apocalyptic number.

66622411 is a deficient number, since it is larger than the sum of its proper divisors (1).

66622411 is an equidigital number, since it uses as much as digits as its factorization.

66622411 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3456, while the sum is 28.

The square root of 66622411 is about 8162.2552643249. The cubic root of 66622411 is about 405.3903892089.

The spelling of 66622411 in words is "sixty-six million, six hundred twenty-two thousand, four hundred eleven".