288661871 has 2 divisors, whose sum is σ = 288661872. Its totient is φ = 288661870.

The previous prime is 288661861. The next prime is 288661873. The reversal of 288661871 is 178166882.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 288661871 - 2¹⁰ = 288660847 is a prime.

Together with 288661873, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (288661873) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 144330935 + 144330936.

It is an arithmetic number, because the mean of its divisors is an integer number (144330936).

Almost surely, 2^288661871 is an apocalyptic number.

288661871 is a deficient number, since it is larger than the sum of its proper divisors (1).

288661871 is an equidigital number, since it uses as much as digits as its factorization.

288661871 is an evil number, because the sum of its binary digits is even.

The product of its digits is 258048, while the sum is 47.

The square root of 288661871 is about 16990.0521188135. The cubic root of 288661871 is about 660.8909539111.

The spelling of 288661871 in words is "two hundred eighty-eight million, six hundred sixty-one thousand, eight hundred seventy-one".