6749281 has 32 divisors (see below), whose sum is σ = 9105408. Its totient is φ = 4847040.

The previous prime is 6749279. The next prime is 6749291. The reversal of 6749281 is 1829476.

It is not a de Polignac number, because 6749281 - 2¹ = 6749279 is a prime.

It is a super-2 number, since 2×6749281² = 91105588033922, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (37).

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 6749281.

It is not an unprimeable number, because it can be changed into a prime (6749261) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 65476 + ... + 65578.

It is an arithmetic number, because the mean of its divisors is an integer number (284544).

Almost surely, 2^6749281 is an apocalyptic number.

It is an amenable number.

6749281 is a deficient number, since it is larger than the sum of its proper divisors (2356127).

6749281 is a wasteful number, since it uses less digits than its factorization.

6749281 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 181.

The product of its digits is 24192, while the sum is 37.

The square root of 6749281 is about 2597.9378360538. The cubic root of 6749281 is about 188.9814469998.

The spelling of 6749281 in words is "six million, seven hundred forty-nine thousand, two hundred eighty-one".