636076489 has 2 divisors, whose sum is σ = 636076490. Its totient is φ = 636076488.

The previous prime is 636076457. The next prime is 636076499. The reversal of 636076489 is 984670636.

636076489 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 556724025 + 79352464 = 23595^2 + 8908^2 .

It is a cyclic number.

It is not a de Polignac number, because 636076489 - 2⁵ = 636076457 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (636076429) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 318038244 + 318038245.

It is an arithmetic number, because the mean of its divisors is an integer number (318038245).

Almost surely, 2^636076489 is an apocalyptic number.

It is an amenable number.

636076489 is a deficient number, since it is larger than the sum of its proper divisors (1).

636076489 is an equidigital number, since it uses as much as digits as its factorization.

636076489 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1306368, while the sum is 49.

The square root of 636076489 is about 25220.5568733127. The cubic root of 636076489 is about 860.0092341716.

The spelling of 636076489 in words is "six hundred thirty-six million, seventy-six thousand, four hundred eighty-nine".