3406681 has 16 divisors (see below), whose sum is σ = 3888000. Its totient is φ = 2965248.

The previous prime is 3406679. The next prime is 3406687. The reversal of 3406681 is 1866043.

It is a cyclic number.

It is not a de Polignac number, because 3406681 - 2¹ = 3406679 is a prime.

It is a super-2 number, since 2×3406681² = 23210950871522, which contains 22 as substring.

It is an Ulam number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3406687) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 17020 + ... + 17218.

It is an arithmetic number, because the mean of its divisors is an integer number (243000).

Almost surely, 2^3406681 is an apocalyptic number.

It is an amenable number.

3406681 is a deficient number, since it is larger than the sum of its proper divisors (481319).

3406681 is a wasteful number, since it uses less digits than its factorization.

3406681 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 288.

The product of its (nonzero) digits is 3456, while the sum is 28.

The square root of 3406681 is about 1845.7196428494. The cubic root of 3406681 is about 150.4678871746.

It can be divided in two parts, 340 and 6681, that added together give a triangular number (7021 = T₁₁₈).

The spelling of 3406681 in words is "three million, four hundred six thousand, six hundred eighty-one".