268787 has 8 divisors (see below), whose sum is σ = 289296. Its totient is φ = 248832.

The previous prime is 268783. The next prime is 268789. The reversal of 268787 is 787862.

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

It is a cyclic number.

It is not a de Polignac number, because 268787 - 2² = 268783 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 268787.

It is not an unprimeable number, because it can be changed into a prime (268781) 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, 1568 + ... + 1730.

It is an arithmetic number, because the mean of its divisors is an integer number (36162).

2²⁶⁸⁷⁸⁷ is an apocalyptic number.

268787 is a deficient number, since it is larger than the sum of its proper divisors (20509).

268787 is a wasteful number, since it uses less digits than its factorization.

268787 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 277.

The product of its digits is 37632, while the sum is 38.

The square root of 268787 is about 518.4467185739. The cubic root of 268787 is about 64.5361054188.

The spelling of 268787 in words is "two hundred sixty-eight thousand, seven hundred eighty-seven".