6768281 has 12 divisors (see below), whose sum is σ = 7587180. Its totient is φ = 6027840.

The previous prime is 6768277. The next prime is 6768283. The reversal of 6768281 is 1828676.

It can be written as a sum of positive squares in 6 ways, for example, as 1032256 + 5736025 = 1016^2 + 2395^2 .

It is not a de Polignac number, because 6768281 - 2² = 6768277 is a prime.

It is a super-2 number, since 2×6768281² = 91619255389922, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (6768283) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4211 + ... + 5591.

It is an arithmetic number, because the mean of its divisors is an integer number (632265).

Almost surely, 2^6768281 is an apocalyptic number.

It is an amenable number.

6768281 is a deficient number, since it is larger than the sum of its proper divisors (818899).

6768281 is a wasteful number, since it uses less digits than its factorization.

6768281 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1436 (or 1423 counting only the distinct ones).

The product of its digits is 32256, while the sum is 38.

The square root of 6768281 is about 2601.5920125954. The cubic root of 6768281 is about 189.1586156686.

It can be divided in two parts, 676 and 8281, that multiplied together give a square (5597956 = 2366²).

The spelling of 6768281 in words is "six million, seven hundred sixty-eight thousand, two hundred eighty-one".