3440681 has 4 divisors (see below), whose sum is σ = 3643092. Its totient is φ = 3238272.

The previous prime is 3440663. The next prime is 3440683. The reversal of 3440681 is 1860443.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1860443 = 13 ⋅143111.

It can be written as a sum of positive squares in 2 ways, for example, as 1525225 + 1915456 = 1235^2 + 1384^2 .

It is a cyclic number.

It is not a de Polignac number, because 3440681 - 2¹⁴ = 3424297 is a prime.

It is a super-2 number, since 2×3440681² = 23676571487522, which contains 22 as substring.

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 3440681.

It is not an unprimeable number, because it can be changed into a prime (3440683) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 101180 + ... + 101213.

It is an arithmetic number, because the mean of its divisors is an integer number (910773).

Almost surely, 2^3440681 is an apocalyptic number.

It is an amenable number.

3440681 is a deficient number, since it is larger than the sum of its proper divisors (202411).

3440681 is a wasteful number, since it uses less digits than its factorization.

3440681 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 202410.

The product of its (nonzero) digits is 2304, while the sum is 26.

The square root of 3440681 is about 1854.9072753105. The cubic root of 3440681 is about 150.9668070250.

The spelling of 3440681 in words is "three million, four hundred forty thousand, six hundred eighty-one".