3297681 has 6 divisors (see below), whose sum is σ = 4763330. Its totient is φ = 2198448.

The previous prime is 3297647. The next prime is 3297683. The reversal of 3297681 is 1867923.

It can be written as a sum of positive squares in only one way, i.e., 3207681 + 90000 = 1791^2 + 300^2 .

It is not a de Polignac number, because 3297681 - 2⁶ = 3297617 is a prime.

It is a super-2 number, since 2×3297681² = 21749399955522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3297683) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 183196 + ... + 183213.

Almost surely, 2^3297681 is an apocalyptic number.

It is an amenable number.

3297681 is a deficient number, since it is larger than the sum of its proper divisors (1465649).

3297681 is a wasteful number, since it uses less digits than its factorization.

3297681 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 366415 (or 366412 counting only the distinct ones).

The product of its digits is 18144, while the sum is 36.

The square root of 3297681 is about 1815.9518165414. The cubic root of 3297681 is about 148.8456729810.

The spelling of 3297681 in words is "three million, two hundred ninety-seven thousand, six hundred eighty-one".