268505887 has 8 divisors (see below), whose sum is σ = 301732704. Its totient is φ = 237075168.

The previous prime is 268505879. The next prime is 268505903. The reversal of 268505887 is 788505862.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 268505887 - 2³ = 268505879 is a prime.

It is a super-2 number, since 2×268505887² = 144190822707313538, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 268505887.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (268505807) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 448708 + ... + 449305.

It is an arithmetic number, because the mean of its divisors is an integer number (37716588).

Almost surely, 2^268505887 is an apocalyptic number.

268505887 is a deficient number, since it is larger than the sum of its proper divisors (33226817).

268505887 is a wasteful number, since it uses less digits than its factorization.

268505887 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 898049.

The product of its (nonzero) digits is 1075200, while the sum is 49.

The square root of 268505887 is about 16386.1492425768. The cubic root of 268505887 is about 645.1359903954.

The spelling of 268505887 in words is "two hundred sixty-eight million, five hundred five thousand, eight hundred eighty-seven".