3643630 has 32 divisors (see below), whose sum is σ = 7004160. Its totient is φ = 1360800.

The previous prime is 3643621. The next prime is 3643631. The reversal of 3643630 is 363463.

It is a junction number, because it is equal to n+sod(n) for n = 3643595 and 3643604.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3643631) 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, 24055 + ... + 24205.

It is an arithmetic number, because the mean of its divisors is an integer number (218880).

Almost surely, 2^3643630 is an apocalyptic number.

3643630 is a deficient number, since it is larger than the sum of its proper divisors (3360530).

3643630 is a wasteful number, since it uses less digits than its factorization.

3643630 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 304.

The product of its (nonzero) digits is 3888, while the sum is 25.

The square root of 3643630 is about 1908.8294842652. The cubic root of 3643630 is about 153.8785515745.

The spelling of 3643630 in words is "three million, six hundred forty-three thousand, six hundred thirty".