268508873 has 4 divisors (see below), whose sum is σ = 268558788. Its totient is φ = 268458960.

The previous prime is 268508869. The next prime is 268508879. The reversal of 268508873 is 378805862.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 378805862 = 2 ⋅189402931.

It can be written as a sum of positive squares in 2 ways, for example, as 263477824 + 5031049 = 16232^2 + 2243^2 .

It is a cyclic number.

It is not a de Polignac number, because 268508873 - 2² = 268508869 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (268508879) 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, 15758 + ... + 28023.

It is an arithmetic number, because the mean of its divisors is an integer number (67139697).

Almost surely, 2^268508873 is an apocalyptic number.

It is an amenable number.

268508873 is a deficient number, since it is larger than the sum of its proper divisors (49915).

268508873 is an equidigital number, since it uses as much as digits as its factorization.

268508873 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49914.

The product of its (nonzero) digits is 645120, while the sum is 47.

The square root of 268508873 is about 16386.2403558595. The cubic root of 268508873 is about 645.1383818625.

The spelling of 268508873 in words is "two hundred sixty-eight million, five hundred eight thousand, eight hundred seventy-three".