3643435 has 4 divisors (see below), whose sum is σ = 4372128. Its totient is φ = 2914744.

The previous prime is 3643429. The next prime is 3643447. The reversal of 3643435 is 5343463.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 3643435 - 2⁵ = 3643403 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 364339 + ... + 364348.

It is an arithmetic number, because the mean of its divisors is an integer number (1093032).

Almost surely, 2^3643435 is an apocalyptic number.

3643435 is a deficient number, since it is larger than the sum of its proper divisors (728693).

3643435 is an equidigital number, since it uses as much as digits as its factorization.

3643435 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 728692.

The product of its digits is 12960, while the sum is 28.

The square root of 3643435 is about 1908.7784051587. The cubic root of 3643435 is about 153.8758064318.

Adding to 3643435 its sum of digits (28), we get a palindrome (3643463).

Adding to 3643435 its reverse (5343463), we get a palindrome (8986898).

The spelling of 3643435 in words is "three million, six hundred forty-three thousand, four hundred thirty-five".