235668491 has 2 divisors, whose sum is σ = 235668492. Its totient is φ = 235668490.

The previous prime is 235668473. The next prime is 235668493. The reversal of 235668491 is 194866532.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 235668491 - 2⁶ = 235668427 is a prime.

Together with 235668493, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (235668493) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 117834245 + 117834246.

It is an arithmetic number, because the mean of its divisors is an integer number (117834246).

Almost surely, 2^235668491 is an apocalyptic number.

235668491 is a deficient number, since it is larger than the sum of its proper divisors (1).

235668491 is an equidigital number, since it uses as much as digits as its factorization.

235668491 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 311040, while the sum is 44.

The square root of 235668491 is about 15351.4980050808. The cubic root of 235668491 is about 617.6851688339.

The spelling of 235668491 in words is "two hundred thirty-five million, six hundred sixty-eight thousand, four hundred ninety-one".