3630605 has 24 divisors (see below), whose sum is σ = 5084856. Its totient is φ = 2478080.

The previous prime is 3630593. The next prime is 3630611. The reversal of 3630605 is 5060363.

It can be written as a sum of positive squares in 4 ways, for example, as 609961 + 3020644 = 781^2 + 1738^2 .

It is not a de Polignac number, because 3630605 - 2¹⁰ = 3629581 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 10109 + ... + 10461.

It is an arithmetic number, because the mean of its divisors is an integer number (211869).

Almost surely, 2^3630605 is an apocalyptic number.

It is an amenable number.

3630605 is a deficient number, since it is larger than the sum of its proper divisors (1454251).

3630605 is a wasteful number, since it uses less digits than its factorization.

3630605 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 397 (or 386 counting only the distinct ones).

The product of its (nonzero) digits is 1620, while the sum is 23.

The square root of 3630605 is about 1905.4146530349. The cubic root of 3630605 is about 153.6949744706.

Adding to 3630605 its reverse (5060363), we get a palindrome (8690968).

The spelling of 3630605 in words is "three million, six hundred thirty thousand, six hundred five".