256998333 has 8 divisors (see below), whose sum is σ = 362821248. Its totient is φ = 161253824.

The previous prime is 256998281. The next prime is 256998341. The reversal of 256998333 is 333899652.

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 256998333 - 2¹⁰ = 256997309 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (256998383) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2519541 + ... + 2519642.

It is an arithmetic number, because the mean of its divisors is an integer number (45352656).

Almost surely, 2^256998333 is an apocalyptic number.

It is an amenable number.

256998333 is a deficient number, since it is larger than the sum of its proper divisors (105822915).

256998333 is a wasteful number, since it uses less digits than its factorization.

256998333 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5039203.

The product of its digits is 1049760, while the sum is 48.

The square root of 256998333 is about 16031.1675494956. The cubic root of 256998333 is about 635.7847433200.

The spelling of 256998333 in words is "two hundred fifty-six million, nine hundred ninety-eight thousand, three hundred thirty-three".