66032663 has 2 divisors, whose sum is σ = 66032664. Its totient is φ = 66032662.

The previous prime is 66032633. The next prime is 66032677. The reversal of 66032663 is 36623066.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 66032663 - 2⁶ = 66032599 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (66032633) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33016331 + 33016332.

It is an arithmetic number, because the mean of its divisors is an integer number (33016332).

Almost surely, 2^66032663 is an apocalyptic number.

66032663 is a deficient number, since it is larger than the sum of its proper divisors (1).

66032663 is an equidigital number, since it uses as much as digits as its factorization.

66032663 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 23328, while the sum is 32.

The square root of 66032663 is about 8126.0484246650. The cubic root of 66032663 is about 404.1906572408.

The spelling of 66032663 in words is "sixty-six million, thirty-two thousand, six hundred sixty-three".