289520663 has 2 divisors, whose sum is σ = 289520664. Its totient is φ = 289520662.

The previous prime is 289520633. The next prime is 289520669. The reversal of 289520663 is 366025982.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 289520663 - 2⁶ = 289520599 is a prime.

It is a Sophie Germain prime.

It is a self number, because there is not a number n which added to its sum of digits gives 289520663.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (289520669) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 144760331 + 144760332.

It is an arithmetic number, because the mean of its divisors is an integer number (144760332).

Almost surely, 2^289520663 is an apocalyptic number.

289520663 is a deficient number, since it is larger than the sum of its proper divisors (1).

289520663 is an equidigital number, since it uses as much as digits as its factorization.

289520663 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 155520, while the sum is 41.

The square root of 289520663 is about 17015.3067265918. The cubic root of 289520663 is about 661.5457060581.

The spelling of 289520663 in words is "two hundred eighty-nine million, five hundred twenty thousand, six hundred sixty-three".