3316681 has 2 divisors, whose sum is σ = 3316682. Its totient is φ = 3316680.

The previous prime is 3316673. The next prime is 3316699. The reversal of 3316681 is 1866133.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2975625 + 341056 = 1725^2 + 584^2 .

It is a cyclic number.

It is not a de Polignac number, because 3316681 - 2³ = 3316673 is a prime.

It is a super-2 number, since 2×3316681² = 22000745711522, which contains 22 as substring.

3316681 is a lucky number.

It is not a weakly prime, because it can be changed into another prime (3316601) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1658340 + 1658341.

It is an arithmetic number, because the mean of its divisors is an integer number (1658341).

Almost surely, 2^3316681 is an apocalyptic number.

It is an amenable number.

3316681 is a deficient number, since it is larger than the sum of its proper divisors (1).

3316681 is an equidigital number, since it uses as much as digits as its factorization.

3316681 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2592, while the sum is 28.

The square root of 3316681 is about 1821.1757191441. The cubic root of 3316681 is about 149.1309900148.

The spelling of 3316681 in words is "three million, three hundred sixteen thousand, six hundred eighty-one".