235568689 has 2 divisors, whose sum is σ = 235568690. Its totient is φ = 235568688.

The previous prime is 235568687. The next prime is 235568693. The reversal of 235568689 is 986865532.

235568689 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 228251664 + 7317025 = 15108^2 + 2705^2 .

It is a cyclic number.

It is not a de Polignac number, because 235568689 - 2¹ = 235568687 is a prime.

Together with 235568687, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (235568687) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 117784344 + 117784345.

It is an arithmetic number, because the mean of its divisors is an integer number (117784345).

Almost surely, 2^235568689 is an apocalyptic number.

It is an amenable number.

235568689 is a deficient number, since it is larger than the sum of its proper divisors (1).

235568689 is an equidigital number, since it uses as much as digits as its factorization.

235568689 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3110400, while the sum is 52.

The square root of 235568689 is about 15348.2470986103. The cubic root of 235568689 is about 617.5979631167.

The spelling of 235568689 in words is "two hundred thirty-five million, five hundred sixty-eight thousand, six hundred eighty-nine".