6749216 has 12 divisors (see below), whose sum is σ = 13287582. Its totient is φ = 3374592.

The previous prime is 6749213. The next prime is 6749261. The reversal of 6749216 is 6129476.

It can be written as a sum of positive squares in only one way, i.e., 6739216 + 10000 = 2596^2 + 100^2 .

It is a super-3 number, since 3×6749216³ (a number of 21 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is an alternating number because its digits alternate between even and odd.

It is not an unprimeable number, because it can be changed into a prime (6749213) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105425 + ... + 105488.

Almost surely, 2^6749216 is an apocalyptic number.

It is an amenable number.

6749216 is a deficient number, since it is larger than the sum of its proper divisors (6538366).

6749216 is a wasteful number, since it uses less digits than its factorization.

6749216 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 210923 (or 210915 counting only the distinct ones).

The product of its digits is 18144, while the sum is 35.

The square root of 6749216 is about 2597.9253261016. The cubic root of 6749216 is about 188.9808403261.

The spelling of 6749216 in words is "six million, seven hundred forty-nine thousand, two hundred sixteen".