268887161 has 4 divisors (see below), whose sum is σ = 269005824. Its totient is φ = 268768500.

The previous prime is 268887139. The next prime is 268887163. The reversal of 268887161 is 161788862.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 161788862 = 2 ⋅80894431.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-268887161 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (268887163) 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, 55865 + ... + 60486.

It is an arithmetic number, because the mean of its divisors is an integer number (67251456).

Almost surely, 2^268887161 is an apocalyptic number.

It is an amenable number.

268887161 is a deficient number, since it is larger than the sum of its proper divisors (118663).

268887161 is a wasteful number, since it uses less digits than its factorization.

268887161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 118662.

The product of its digits is 258048, while the sum is 47.

The square root of 268887161 is about 16397.7791484091. The cubic root of 268887161 is about 645.4412068508.

The spelling of 268887161 in words is "two hundred sixty-eight million, eight hundred eighty-seven thousand, one hundred sixty-one".