6636375617 has 2 divisors, whose sum is σ = 6636375618. Its totient is φ = 6636375616.

The previous prime is 6636375583. The next prime is 6636375673. The reversal of 6636375617 is 7165736366.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 4144269376 + 2492106241 = 64376^2 + 49921^2 .

It is a cyclic number.

It is not a de Polignac number, because 6636375617 - 2¹⁶ = 6636310081 is a prime.

It is not a weakly prime, because it can be changed into another prime (6636375677) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3318187808 + 3318187809.

It is an arithmetic number, because the mean of its divisors is an integer number (3318187809).

Almost surely, 2^6636375617 is an apocalyptic number.

It is an amenable number.

6636375617 is a deficient number, since it is larger than the sum of its proper divisors (1).

6636375617 is an equidigital number, since it uses as much as digits as its factorization.

6636375617 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2857680, while the sum is 50.

The square root of 6636375617 is about 81463.9528687382. The cubic root of 6636375617 is about 1879.2172326951.

The spelling of 6636375617 in words is "six billion, six hundred thirty-six million, three hundred seventy-five thousand, six hundred seventeen".