3643000 has 32 divisors (see below), whose sum is σ = 8526960. Its totient is φ = 1456800.

The previous prime is 3642971. The next prime is 3643001. The reversal of 3643000 is 3463.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3643001) 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 7 ways as a sum of consecutive naturals, for example, 822 + ... + 2821.

Almost surely, 2^3643000 is an apocalyptic number.

It is an amenable number.

3643000 is an abundant number, since it is smaller than the sum of its proper divisors (4883960).

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

3643000 is a wasteful number, since it uses less digits than its factorization.

3643000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3664 (or 3650 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 16.

The square root of 3643000 is about 1908.6644545336. The cubic root of 3643000 is about 153.8696822989.

Adding to 3643000 its reverse (3463), we get a palindrome (3646463).

It can be divided in two parts, 364 and 3000, that added together give a square (3364 = 58²).

The spelling of 3643000 in words is "three million, six hundred forty-three thousand".