3641005 has 8 divisors (see below), whose sum is σ = 4476024. Its totient is φ = 2841600.

The previous prime is 3640999. The next prime is 3641041. The reversal of 3641005 is 5001463.

It can be written as a sum of positive squares in 4 ways, for example, as 4356 + 3636649 = 66^2 + 1907^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 3641005 - 2⁹ = 3640493 is a prime.

It is a Duffinian number.

3641005 is a lucky number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8676 + ... + 9085.

It is an arithmetic number, because the mean of its divisors is an integer number (559503).

Almost surely, 2^3641005 is an apocalyptic number.

It is an amenable number.

3641005 is a deficient number, since it is larger than the sum of its proper divisors (835019).

3641005 is a wasteful number, since it uses less digits than its factorization.

3641005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17807.

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

The square root of 3641005 is about 1908.1417662218. The cubic root of 3641005 is about 153.8415895120.

Adding to 3641005 its reverse (5001463), we get a palindrome (8642468).

It can be divided in two parts, 364 and 1005, that added together give a square (1369 = 37²).

The spelling of 3641005 in words is "three million, six hundred forty-one thousand, five".