66654323 has 2 divisors, whose sum is σ = 66654324. Its totient is φ = 66654322.

The previous prime is 66654317. The next prime is 66654373. The reversal of 66654323 is 32345666.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 66654323 - 2¹⁰ = 66653299 is a prime.

It is not a weakly prime, because it can be changed into another prime (66654373) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33327161 + 33327162.

It is an arithmetic number, because the mean of its divisors is an integer number (33327162).

Almost surely, 2^66654323 is an apocalyptic number.

66654323 is a deficient number, since it is larger than the sum of its proper divisors (1).

66654323 is an equidigital number, since it uses as much as digits as its factorization.

66654323 is an evil number, because the sum of its binary digits is even.

The product of its digits is 77760, while the sum is 35.

The square root of 66654323 is about 8164.2098821625. The cubic root of 66654323 is about 405.4551059355.

Adding to 66654323 its reverse (32345666), we get a palindrome (98999989).

The spelling of 66654323 in words is "sixty-six million, six hundred fifty-four thousand, three hundred twenty-three".