268356761 has 4 divisors (see below), whose sum is σ = 269013300. Its totient is φ = 267700224.

The previous prime is 268356743. The next prime is 268356773. The reversal of 268356761 is 167653862.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 243953161 + 24403600 = 15619^2 + 4940^2 .

It is a cyclic number.

It is not a de Polignac number, because 268356761 - 2¹⁴ = 268340377 is a prime.

It is a super-2 number, since 2×268356761² = 144030702348822242, which contains 22 as substring.

It is a Duffinian number.

It is a nialpdrome in base 16.

It is not an unprimeable number, because it can be changed into a prime (268356791) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 327656 + ... + 328473.

It is an arithmetic number, because the mean of its divisors is an integer number (67253325).

Almost surely, 2^268356761 is an apocalyptic number.

It is an amenable number.

268356761 is a deficient number, since it is larger than the sum of its proper divisors (656539).

268356761 is an equidigital number, since it uses as much as digits as its factorization.

268356761 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 656538.

The product of its digits is 362880, while the sum is 44.

The square root of 268356761 is about 16381.5982431508. The cubic root of 268356761 is about 645.0165338389.

The spelling of 268356761 in words is "two hundred sixty-eight million, three hundred fifty-six thousand, seven hundred sixty-one".