66854311 has 2 divisors, whose sum is σ = 66854312. Its totient is φ = 66854310.

The previous prime is 66854299. The next prime is 66854323. The reversal of 66854311 is 11345866.

It is a happy number.

It is a balanced prime because it is at equal distance from previous prime (66854299) and next prime (66854323).

It is a cyclic number.

It is not a de Polignac number, because 66854311 - 2⁵ = 66854279 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (66854111) 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 as a sum of consecutive naturals, namely, 33427155 + 33427156.

It is an arithmetic number, because the mean of its divisors is an integer number (33427156).

Almost surely, 2^66854311 is an apocalyptic number.

66854311 is a deficient number, since it is larger than the sum of its proper divisors (1).

66854311 is an equidigital number, since it uses as much as digits as its factorization.

66854311 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 17280, while the sum is 34.

The square root of 66854311 is about 8176.4485566779. The cubic root of 66854311 is about 405.8602069136.

The spelling of 66854311 in words is "sixty-six million, eight hundred fifty-four thousand, three hundred eleven".