3401605 has 4 divisors (see below), whose sum is σ = 4081932. Its totient is φ = 2721280.

The previous prime is 3401603. The next prime is 3401611. The reversal of 3401605 is 5061043.

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 2405601 + 996004 = 1551^2 + 998^2 .

It is not a de Polignac number, because 3401605 - 2¹ = 3401603 is a prime.

It is a super-4 number, since 4×3401605⁴ (a number of 27 digits) contains 4444 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 (3401603) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 340156 + ... + 340165.

It is an arithmetic number, because the mean of its divisors is an integer number (1020483).

Almost surely, 2^3401605 is an apocalyptic number.

It is an amenable number.

3401605 is a deficient number, since it is larger than the sum of its proper divisors (680327).

3401605 is an equidigital number, since it uses as much as digits as its factorization.

3401605 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 680326.

The product of its (nonzero) digits is 360, while the sum is 19.

The square root of 3401605 is about 1844.3440568397. The cubic root of 3401605 is about 150.3931169751.

Adding to 3401605 its reverse (5061043), we get a palindrome (8462648).

The spelling of 3401605 in words is "three million, four hundred one thousand, six hundred five".