256969666 has 8 divisors (see below), whose sum is σ = 385946640. Its totient is φ = 128320788.

The previous prime is 256969649. The next prime is 256969679. The reversal of 256969666 is 666969652.

256969666 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 80056 + ... + 83203.

It is an arithmetic number, because the mean of its divisors is an integer number (48243330).

Almost surely, 2^256969666 is an apocalyptic number.

256969666 is a deficient number, since it is larger than the sum of its proper divisors (128976974).

256969666 is a wasteful number, since it uses less digits than its factorization.

256969666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 164048.

The product of its digits is 6298560, while the sum is 55.

The square root of 256969666 is about 16030.2734224966. The cubic root of 256969666 is about 635.7611028049.

The spelling of 256969666 in words is "two hundred fifty-six million, nine hundred sixty-nine thousand, six hundred sixty-six".