6406281 has 24 divisors (see below), whose sum is σ = 10755264. Its totient is φ = 3598560.

The previous prime is 6406247. The next prime is 6406307. The reversal of 6406281 is 1826046.

It is not a de Polignac number, because 6406281 - 2¹⁴ = 6389897 is a prime.

It is a super-2 number, since 2×6406281² = 82080872501922, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (6406381) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3010 + ... + 4676.

It is an arithmetic number, because the mean of its divisors is an integer number (448136).

Almost surely, 2^6406281 is an apocalyptic number.

6406281 is a gapful number since it is divisible by the number (61) formed by its first and last digit.

It is an amenable number.

6406281 is a deficient number, since it is larger than the sum of its proper divisors (4348983).

6406281 is a wasteful number, since it uses less digits than its factorization.

6406281 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1741 (or 1738 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 27.

The square root of 6406281 is about 2531.0632153307. The cubic root of 6406281 is about 185.7242706100.

The spelling of 6406281 in words is "six million, four hundred six thousand, two hundred eighty-one".