66632263 has 2 divisors, whose sum is σ = 66632264. Its totient is φ = 66632262.

The previous prime is 66632261. The next prime is 66632303. The reversal of 66632263 is 36223666.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 66632263 - 2¹ = 66632261 is a prime.

Together with 66632261, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (66632261) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33316131 + 33316132.

It is an arithmetic number, because the mean of its divisors is an integer number (33316132).

Almost surely, 2^66632263 is an apocalyptic number.

66632263 is a deficient number, since it is larger than the sum of its proper divisors (1).

66632263 is an equidigital number, since it uses as much as digits as its factorization.

66632263 is an evil number, because the sum of its binary digits is even.

The product of its digits is 46656, while the sum is 34.

The square root of 66632263 is about 8162.8587516874. The cubic root of 66632263 is about 405.4103710198.

The spelling of 66632263 in words is "sixty-six million, six hundred thirty-two thousand, two hundred sixty-three".