268866757 has 4 divisors (see below), whose sum is σ = 280556640. Its totient is φ = 257176876.

The previous prime is 268866733. The next prime is 268866761. The reversal of 268866757 is 757668862.

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, and also an emirpimes, since its reverse is a distinct semiprime: 757668862 = 2 ⋅378834431.

It is a cyclic number.

It is not a de Polignac number, because 268866757 - 2¹¹ = 268864709 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 268866698 and 268866707.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (268866557) 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, 5844907 + ... + 5844952.

It is an arithmetic number, because the mean of its divisors is an integer number (70139160).

Almost surely, 2^268866757 is an apocalyptic number.

It is an amenable number.

268866757 is a deficient number, since it is larger than the sum of its proper divisors (11689883).

268866757 is a wasteful number, since it uses less digits than its factorization.

268866757 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11689882.

The product of its digits is 6773760, while the sum is 55.

The square root of 268866757 is about 16397.1569791839. The cubic root of 268866757 is about 645.4248804043.

The spelling of 268866757 in words is "two hundred sixty-eight million, eight hundred sixty-six thousand, seven hundred fifty-seven".