66305023 has 2 divisors, whose sum is σ = 66305024. Its totient is φ = 66305022.

The previous prime is 66305017. The next prime is 66305033. The reversal of 66305023 is 32050366.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 66305023 - 2¹⁷ = 66173951 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (66305033) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33152511 + 33152512.

It is an arithmetic number, because the mean of its divisors is an integer number (33152512).

Almost surely, 2^66305023 is an apocalyptic number.

66305023 is a deficient number, since it is larger than the sum of its proper divisors (1).

66305023 is an equidigital number, since it uses as much as digits as its factorization.

66305023 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3240, while the sum is 25.

The square root of 66305023 is about 8142.7896325522. The cubic root of 66305023 is about 404.7456066383.

Adding to 66305023 its reverse (32050366), we get a palindrome (98355389).

The spelling of 66305023 in words is "sixty-six million, three hundred five thousand, twenty-three".