268766393 has 4 divisors (see below), whose sum is σ = 307161600. Its totient is φ = 230371188.

The previous prime is 268766387. The next prime is 268766479. The reversal of 268766393 is 393667862.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 268766393 - 2¹⁶ = 268700857 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (268666393) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 19197593 + ... + 19197606.

It is an arithmetic number, because the mean of its divisors is an integer number (76790400).

Almost surely, 2^268766393 is an apocalyptic number.

It is an amenable number.

268766393 is a deficient number, since it is larger than the sum of its proper divisors (38395207).

268766393 is an equidigital number, since it uses as much as digits as its factorization.

268766393 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38395206.

The product of its digits is 1959552, while the sum is 50.

The square root of 268766393 is about 16394.0962849436. The cubic root of 268766393 is about 645.3445612092.

The spelling of 268766393 in words is "two hundred sixty-eight million, seven hundred sixty-six thousand, three hundred ninety-three".