66235667 has 2 divisors, whose sum is σ = 66235668. Its totient is φ = 66235666.

The previous prime is 66235657. The next prime is 66235679. The reversal of 66235667 is 76653266.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 66235667 - 2⁴ = 66235651 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (66235657) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33117833 + 33117834.

It is an arithmetic number, because the mean of its divisors is an integer number (33117834).

Almost surely, 2^66235667 is an apocalyptic number.

66235667 is a deficient number, since it is larger than the sum of its proper divisors (1).

66235667 is an equidigital number, since it uses as much as digits as its factorization.

66235667 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 272160, while the sum is 41.

The square root of 66235667 is about 8138.5297812320. The cubic root of 66235667 is about 404.6044341778.

The spelling of 66235667 in words is "sixty-six million, two hundred thirty-five thousand, six hundred sixty-seven".