6468281 has 4 divisors (see below), whose sum is σ = 6605952. Its totient is φ = 6330612.

The previous prime is 6468277. The next prime is 6468289. The reversal of 6468281 is 1828646.

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 6468281 - 2² = 6468277 is a prime.

It is a super-2 number, since 2×6468281² = 83677318189922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6468289) 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, 68765 + ... + 68858.

It is an arithmetic number, because the mean of its divisors is an integer number (1651488).

Almost surely, 2^6468281 is an apocalyptic number.

It is an amenable number.

6468281 is a deficient number, since it is larger than the sum of its proper divisors (137671).

6468281 is a wasteful number, since it uses less digits than its factorization.

6468281 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 137670.

The product of its digits is 18432, while the sum is 35.

The square root of 6468281 is about 2543.2815416308. The cubic root of 6468281 is about 186.3214947059.

The spelling of 6468281 in words is "six million, four hundred sixty-eight thousand, two hundred eighty-one".