256893166 has 8 divisors (see below), whose sum is σ = 386107344. Its totient is φ = 128190720.

The previous prime is 256893163. The next prime is 256893179. The reversal of 256893166 is 661398652.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (256893163) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 126675 + ... + 128686.

It is an arithmetic number, because the mean of its divisors is an integer number (48263418).

Almost surely, 2^256893166 is an apocalyptic number.

256893166 is a deficient number, since it is larger than the sum of its proper divisors (129214178).

256893166 is a wasteful number, since it uses less digits than its factorization.

256893166 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 255866.

The product of its digits is 466560, while the sum is 46.

The square root of 256893166 is about 16027.8871346163. The cubic root of 256893166 is about 635.6980077423.

The spelling of 256893166 in words is "two hundred fifty-six million, eight hundred ninety-three thousand, one hundred sixty-six".