66623027 has 2 divisors, whose sum is σ = 66623028. Its totient is φ = 66623026.

The previous prime is 66623009. The next prime is 66623033. The reversal of 66623027 is 72032666.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 66623027 - 2⁸ = 66622771 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 66622984 and 66623002.

It is not a weakly prime, because it can be changed into another prime (66623047) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33311513 + 33311514.

It is an arithmetic number, because the mean of its divisors is an integer number (33311514).

Almost surely, 2^66623027 is an apocalyptic number.

66623027 is a deficient number, since it is larger than the sum of its proper divisors (1).

66623027 is an equidigital number, since it uses as much as digits as its factorization.

66623027 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 18144, while the sum is 32.

The square root of 66623027 is about 8162.2929989066. The cubic root of 66623027 is about 405.3916386369.

The spelling of 66623027 in words is "sixty-six million, six hundred twenty-three thousand, twenty-seven".