256606233 has 8 divisors (see below), whose sum is σ = 368460288. Its totient is φ = 157911504.

The previous prime is 256606219. The next prime is 256606237. The reversal of 256606233 is 332606652.

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

It is not a de Polignac number, because 256606233 - 2⁵ = 256606201 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 256606194 and 256606203.

It is not an unprimeable number, because it can be changed into a prime (256606237) 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, 3289785 + ... + 3289862.

It is an arithmetic number, because the mean of its divisors is an integer number (46057536).

Almost surely, 2^256606233 is an apocalyptic number.

It is an amenable number.

256606233 is a deficient number, since it is larger than the sum of its proper divisors (111854055).

256606233 is a wasteful number, since it uses less digits than its factorization.

256606233 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6579663.

The product of its (nonzero) digits is 38880, while the sum is 33.

The square root of 256606233 is about 16018.9335787374. The cubic root of 256606233 is about 635.4612417588.

The spelling of 256606233 in words is "two hundred fifty-six million, six hundred six thousand, two hundred thirty-three".