3643629 has 16 divisors (see below), whose sum is σ = 5431104. Its totient is φ = 2153600.

The previous prime is 3643621. The next prime is 3643631. The reversal of 3643629 is 9263463.

It is a cyclic number.

It is not a de Polignac number, because 3643629 - 2³ = 3643621 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a self number, because there is not a number n which added to its sum of digits gives 3643629.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3643621) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7 + ... + 2699.

It is an arithmetic number, because the mean of its divisors is an integer number (339444).

Almost surely, 2^3643629 is an apocalyptic number.

It is an amenable number.

3643629 is a deficient number, since it is larger than the sum of its proper divisors (1787475).

3643629 is a wasteful number, since it uses less digits than its factorization.

3643629 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2748.

The product of its digits is 23328, while the sum is 33.

The square root of 3643629 is about 1908.8292223245. The cubic root of 3643629 is about 153.8785374971.

It can be divided in two parts, 364 and 3629, that added together give a palindrome (3993).

The spelling of 3643629 in words is "three million, six hundred forty-three thousand, six hundred twenty-nine".