66632303 has 2 divisors, whose sum is σ = 66632304. Its totient is φ = 66632302.

The previous prime is 66632263. The next prime is 66632309. The reversal of 66632303 is 30323666.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 66632303 - 2²⁴ = 49855087 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (66632309) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33316151 + 33316152.

It is an arithmetic number, because the mean of its divisors is an integer number (33316152).

Almost surely, 2^66632303 is an apocalyptic number.

66632303 is a deficient number, since it is larger than the sum of its proper divisors (1).

66632303 is an equidigital number, since it uses as much as digits as its factorization.

66632303 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 11664, while the sum is 29.

The square root of 66632303 is about 8162.8612018091. The cubic root of 66632303 is about 405.4104521437.

Adding to 66632303 its reverse (30323666), we get a palindrome (96955969).

The spelling of 66632303 in words is "sixty-six million, six hundred thirty-two thousand, three hundred three".