3605646 has 16 divisors (see below), whose sum is σ = 7867008. Its totient is φ = 1092600.

The previous prime is 3605633. The next prime is 3605647. The reversal of 3605646 is 6465063.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3605647) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 27250 + ... + 27381.

It is an arithmetic number, because the mean of its divisors is an integer number (491688).

Almost surely, 2^3605646 is an apocalyptic number.

3605646 is an abundant number, since it is smaller than the sum of its proper divisors (4261362).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

3605646 is a wasteful number, since it uses less digits than its factorization.

3605646 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54647.

The product of its (nonzero) digits is 12960, while the sum is 30.

The square root of 3605646 is about 1898.8538648353. The cubic root of 3605646 is about 153.3419665376.

It can be divided in two parts, 360 and 5646, that added together give a palindrome (6006).

The spelling of 3605646 in words is "three million, six hundred five thousand, six hundred forty-six".