268564578 has 32 divisors (see below), whose sum is σ = 555232320. Its totient is φ = 86554560.

The previous prime is 268564567. The next prime is 268564607. The reversal of 268564578 is 875465862.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 268564578.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 15376 + ... + 27812.

It is an arithmetic number, because the mean of its divisors is an integer number (17351010).

Almost surely, 2^268564578 is an apocalyptic number.

268564578 is an abundant number, since it is smaller than the sum of its proper divisors (286667742).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

268564578 is a wasteful number, since it uses less digits than its factorization.

268564578 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12562.

The product of its digits is 3225600, while the sum is 51.

The square root of 268564578 is about 16387.9400169759. The cubic root of 268564578 is about 645.1829923667.

The spelling of 268564578 in words is "two hundred sixty-eight million, five hundred sixty-four thousand, five hundred seventy-eight".