233826561 has 16 divisors (see below), whose sum is σ = 354467520. Its totient is φ = 152258400.

The previous prime is 233826557. The next prime is 233826581. The reversal of 233826561 is 165628332.

It is a happy number.

233826561 is a `hidden beast` number, since 2 + 338 + 265 + 61 = 666.

It is not a de Polignac number, because 233826561 - 2² = 233826557 is a prime.

It is not an unprimeable number, because it can be changed into a prime (233826511) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 99540 + ... + 101861.

It is an arithmetic number, because the mean of its divisors is an integer number (22154220).

Almost surely, 2^233826561 is an apocalyptic number.

It is an amenable number.

233826561 is a deficient number, since it is larger than the sum of its proper divisors (120640959).

233826561 is a wasteful number, since it uses less digits than its factorization.

233826561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 201453 (or 201447 counting only the distinct ones).

The product of its digits is 51840, while the sum is 36.

The square root of 233826561 is about 15291.3884588680. The cubic root of 233826561 is about 616.0717303115.

The spelling of 233826561 in words is "two hundred thirty-three million, eight hundred twenty-six thousand, five hundred sixty-one".