3407581 has 4 divisors (see below), whose sum is σ = 3427452. Its totient is φ = 3387712.

The previous prime is 3407557. The next prime is 3407597. The reversal of 3407581 is 1857043.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1822500 + 1585081 = 1350^2 + 1259^2 .

It is a cyclic number.

It is not a de Polignac number, because 3407581 - 2¹⁷ = 3276509 is a prime.

It is a super-2 number, since 2×3407581² = 23223216543122, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3407501) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9676 + ... + 10021.

It is an arithmetic number, because the mean of its divisors is an integer number (856863).

Almost surely, 2^3407581 is an apocalyptic number.

It is an amenable number.

3407581 is a deficient number, since it is larger than the sum of its proper divisors (19871).

3407581 is a wasteful number, since it uses less digits than its factorization.

3407581 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19870.

The product of its (nonzero) digits is 3360, while the sum is 28.

The square root of 3407581 is about 1845.9634340907. The cubic root of 3407581 is about 150.4811365489.

It can be divided in two parts, 34075 and 81, that multiplied together give a triangular number (2760075 = T₂₃₄₉).

The spelling of 3407581 in words is "three million, four hundred seven thousand, five hundred eighty-one".