2689120663 has 2 divisors, whose sum is σ = 2689120664. Its totient is φ = 2689120662.

The previous prime is 2689120661. The next prime is 2689120691. The reversal of 2689120663 is 3660219862.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2689120663 - 2¹ = 2689120661 is a prime.

Together with 2689120661, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2689120661) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1344560331 + 1344560332.

It is an arithmetic number, because the mean of its divisors is an integer number (1344560332).

Almost surely, 2^2689120663 is an apocalyptic number.

2689120663 is a deficient number, since it is larger than the sum of its proper divisors (1).

2689120663 is an equidigital number, since it uses as much as digits as its factorization.

2689120663 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 186624, while the sum is 43.

The square root of 2689120663 is about 51856.7320894790. The cubic root of 2689120663 is about 1390.6038580150.

The spelling of 2689120663 in words is "two billion, six hundred eighty-nine million, one hundred twenty thousand, six hundred sixty-three".