268958717 has 6 divisors (see below), whose sum is σ = 285710778. Its totient is φ = 253137344.

The previous prime is 268958713. The next prime is 268958719. The reversal of 268958717 is 717859862.

It can be written as a sum of positive squares in 3 ways, for example, as 43178041 + 225780676 = 6571^2 + 15026^2 .

It is not a de Polignac number, because 268958717 - 2² = 268958713 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (268958713) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 465038 + ... + 465615.

It is an arithmetic number, because the mean of its divisors is an integer number (47618463).

Almost surely, 2^268958717 is an apocalyptic number.

It is an amenable number.

268958717 is a deficient number, since it is larger than the sum of its proper divisors (16752061).

268958717 is an equidigital number, since it uses as much as digits as its factorization.

268958717 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 930687 (or 930670 counting only the distinct ones).

The product of its digits is 1693440, while the sum is 53.

The square root of 268958717 is about 16399.9608840997. The cubic root of 268958717 is about 645.4984565096.

The spelling of 268958717 in words is "two hundred sixty-eight million, nine hundred fifty-eight thousand, seven hundred seventeen".