256467698 has 4 divisors (see below), whose sum is σ = 384701550. Its totient is φ = 128233848.

The previous prime is 256467697. The next prime is 256467703. The reversal of 256467698 is 896764652.

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., 256416169 + 51529 = 16013^2 + 227^2 .

It is not an unprimeable number, because it can be changed into a prime (256467697) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 64116923 + ... + 64116926.

Almost surely, 2^256467698 is an apocalyptic number.

256467698 is a deficient number, since it is larger than the sum of its proper divisors (128233852).

256467698 is a wasteful number, since it uses less digits than its factorization.

256467698 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 128233851.

The product of its digits is 4354560, while the sum is 53.

The square root of 256467698 is about 16014.6088931325. The cubic root of 256467698 is about 635.3468648668.

The spelling of 256467698 in words is "two hundred fifty-six million, four hundred sixty-seven thousand, six hundred ninety-eight".