66354311 has 2 divisors, whose sum is σ = 66354312. Its totient is φ = 66354310.

The previous prime is 66354293. The next prime is 66354313. The reversal of 66354311 is 11345366.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 66354311 - 2¹⁸ = 66092167 is a prime.

Together with 66354313, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (66354313) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33177155 + 33177156.

It is an arithmetic number, because the mean of its divisors is an integer number (33177156).

Almost surely, 2^66354311 is an apocalyptic number.

66354311 is a deficient number, since it is larger than the sum of its proper divisors (1).

66354311 is an equidigital number, since it uses as much as digits as its factorization.

66354311 is an evil number, because the sum of its binary digits is even.

The product of its digits is 6480, while the sum is 29.

The square root of 66354311 is about 8145.8155515577. The cubic root of 66354311 is about 404.8458713419.

Adding to 66354311 its reverse (11345366), we get a palindrome (77699677).

The spelling of 66354311 in words is "sixty-six million, three hundred fifty-four thousand, three hundred eleven".