268815 has 8 divisors (see below), whose sum is σ = 430128. Its totient is φ = 143360.

The previous prime is 268813. The next prime is 268817. The reversal of 268815 is 518862.

It is an interprime number because it is at equal distance from previous prime (268813) and next prime (268817).

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

It is not a de Polignac number, because 268815 - 2¹ = 268813 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (268811) 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, 8946 + ... + 8975.

It is an arithmetic number, because the mean of its divisors is an integer number (53766).

2²⁶⁸⁸¹⁵ is an apocalyptic number.

268815 is a deficient number, since it is larger than the sum of its proper divisors (161313).

268815 is a wasteful number, since it uses less digits than its factorization.

268815 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17929.

The product of its digits is 3840, while the sum is 30.

The square root of 268815 is about 518.4737216099. The cubic root of 268815 is about 64.5383462864.

Subtracting 268815 from its reverse (518862), we obtain a cube (250047 = 63³).

The spelling of 268815 in words is "two hundred sixty-eight thousand, eight hundred fifteen".