289684663 has 2 divisors, whose sum is σ = 289684664. Its totient is φ = 289684662.

The previous prime is 289684601. The next prime is 289684673. The reversal of 289684663 is 366486982.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 289684663 - 2¹⁷ = 289553591 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 289684663.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (289684673) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 144842331 + 144842332.

It is an arithmetic number, because the mean of its divisors is an integer number (144842332).

Almost surely, 2^289684663 is an apocalyptic number.

289684663 is a deficient number, since it is larger than the sum of its proper divisors (1).

289684663 is an equidigital number, since it uses as much as digits as its factorization.

289684663 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2985984, while the sum is 52.

The square root of 289684663 is about 17020.1252345569. The cubic root of 289684663 is about 661.6705941122.

The spelling of 289684663 in words is "two hundred eighty-nine million, six hundred eighty-four thousand, six hundred sixty-three".