66468823 has 2 divisors, whose sum is σ = 66468824. Its totient is φ = 66468822.

The previous prime is 66468799. The next prime is 66468847. The reversal of 66468823 is 32886466.

It is a balanced prime because it is at equal distance from previous prime (66468799) and next prime (66468847).

It is a cyclic number.

It is not a de Polignac number, because 66468823 - 2⁵ = 66468791 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 66468823.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (66468893) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33234411 + 33234412.

It is an arithmetic number, because the mean of its divisors is an integer number (33234412).

Almost surely, 2^66468823 is an apocalyptic number.

66468823 is a deficient number, since it is larger than the sum of its proper divisors (1).

66468823 is an equidigital number, since it uses as much as digits as its factorization.

66468823 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 331776, while the sum is 43.

The square root of 66468823 is about 8152.8414065282. The cubic root of 66468823 is about 405.0786272176.

The spelling of 66468823 in words is "sixty-six million, four hundred sixty-eight thousand, eight hundred twenty-three".