66632611 has 2 divisors, whose sum is σ = 66632612. Its totient is φ = 66632610.

The previous prime is 66632593. The next prime is 66632659. The reversal of 66632611 is 11623666.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 66632611 - 2⁹ = 66632099 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (66632711) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33316305 + 33316306.

It is an arithmetic number, because the mean of its divisors is an integer number (33316306).

Almost surely, 2^66632611 is an apocalyptic number.

66632611 is a deficient number, since it is larger than the sum of its proper divisors (1).

66632611 is an equidigital number, since it uses as much as digits as its factorization.

66632611 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 7776, while the sum is 31.

The square root of 66632611 is about 8162.8800677212. The cubic root of 66632611 is about 405.4110767969.

The spelling of 66632611 in words is "sixty-six million, six hundred thirty-two thousand, six hundred eleven".