233356561 has 8 divisors (see below), whose sum is σ = 243272448. Its totient is φ = 223590000.

The previous prime is 233356553. The next prime is 233356577. The reversal of 233356561 is 165653332.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 233356561 - 2³ = 233356553 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (233356261) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 34135 + ... + 40396.

It is an arithmetic number, because the mean of its divisors is an integer number (30409056).

Almost surely, 2^233356561 is an apocalyptic number.

It is an amenable number.

233356561 is a deficient number, since it is larger than the sum of its proper divisors (9915887).

233356561 is a wasteful number, since it uses less digits than its factorization.

233356561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 74663.

The product of its digits is 48600, while the sum is 34.

The square root of 233356561 is about 15276.0126014612. The cubic root of 233356561 is about 615.6586778144.

The spelling of 233356561 in words is "two hundred thirty-three million, three hundred fifty-six thousand, five hundred sixty-one".