268781753 has 4 divisors (see below), whose sum is σ = 271293840. Its totient is φ = 266269668.

The previous prime is 268781741. The next prime is 268781759. The reversal of 268781753 is 357187862.

It is a happy number.

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 a de Polignac number, because none of the positive numbers 2^k-268781753 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 268781698 and 268781707.

It is not an unprimeable number, because it can be changed into a prime (268781759) 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, 1255883 + ... + 1256096.

It is an arithmetic number, because the mean of its divisors is an integer number (67823460).

Almost surely, 2^268781753 is an apocalyptic number.

It is an amenable number.

268781753 is a deficient number, since it is larger than the sum of its proper divisors (2512087).

268781753 is a wasteful number, since it uses less digits than its factorization.

268781753 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2512086.

The product of its digits is 564480, while the sum is 47.

The square root of 268781753 is about 16394.5647395715. The cubic root of 268781753 is about 645.3568547894.

The spelling of 268781753 in words is "two hundred sixty-eight million, seven hundred eighty-one thousand, seven hundred fifty-three".