268779 has 8 divisors (see below), whose sum is σ = 409600. Its totient is φ = 153576.

The previous prime is 268777. The next prime is 268781. The reversal of 268779 is 977862.

268779 = 132² + 133² + ... + 145².

It is an interprime number because it is at equal distance from previous prime (268777) and next prime (268781).

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

It is not a de Polignac number, because 268779 - 2¹ = 268777 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (268771) 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, 6379 + ... + 6420.

It is an arithmetic number, because the mean of its divisors is an integer number (51200).

2²⁶⁸⁷⁷⁹ is an apocalyptic number.

268779 is a deficient number, since it is larger than the sum of its proper divisors (140821).

268779 is a wasteful number, since it uses less digits than its factorization.

268779 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12809.

The product of its digits is 42336, while the sum is 39.

The square root of 268779 is about 518.4390031624. The cubic root of 268779 is about 64.5354651424.

The spelling of 268779 in words is "two hundred sixty-eight thousand, seven hundred seventy-nine".