636970067 has 2 divisors, whose sum is σ = 636970068. Its totient is φ = 636970066.

The previous prime is 636970031. The next prime is 636970097. The reversal of 636970067 is 760079636.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 636970067 - 2¹⁰ = 636969043 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (636970097) 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, 318485033 + 318485034.

It is an arithmetic number, because the mean of its divisors is an integer number (318485034).

Almost surely, 2^636970067 is an apocalyptic number.

636970067 is a deficient number, since it is larger than the sum of its proper divisors (1).

636970067 is an equidigital number, since it uses as much as digits as its factorization.

636970067 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 285768, while the sum is 44.

The square root of 636970067 is about 25238.2659269610. The cubic root of 636970067 is about 860.4117673900.

The spelling of 636970067 in words is "six hundred thirty-six million, nine hundred seventy thousand, sixty-seven".