256455466 has 4 divisors (see below), whose sum is σ = 384683202. Its totient is φ = 128227732.

The previous prime is 256455457. The next prime is 256455469. The reversal of 256455466 is 664554652.

It is a happy number.

256455466 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 164583241 + 91872225 = 12829^2 + 9585^2 .

It is not an unprimeable number, because it can be changed into a prime (256455469) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 64113865 + ... + 64113868.

Almost surely, 2^256455466 is an apocalyptic number.

256455466 is a deficient number, since it is larger than the sum of its proper divisors (128227736).

256455466 is a wasteful number, since it uses less digits than its factorization.

256455466 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 128227735.

The product of its digits is 864000, while the sum is 43.

The square root of 256455466 is about 16014.2269872760. The cubic root of 256455466 is about 635.3367639373.

The spelling of 256455466 in words is "two hundred fifty-six million, four hundred fifty-five thousand, four hundred sixty-six".