3553643 has 4 divisors (see below), whose sum is σ = 3579720. Its totient is φ = 3527568.

The previous prime is 3553601. The next prime is 3553673. The reversal of 3553643 is 3463553.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3463553 = 293 ⋅11821.

It is a cyclic number.

It is not a de Polignac number, because 3553643 - 2⁶ = 3553579 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3553673) 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 3 ways as a sum of consecutive naturals, for example, 12833 + ... + 13106.

It is an arithmetic number, because the mean of its divisors is an integer number (894930).

Almost surely, 2^3553643 is an apocalyptic number.

3553643 is a deficient number, since it is larger than the sum of its proper divisors (26077).

3553643 is a wasteful number, since it uses less digits than its factorization.

3553643 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26076.

The product of its digits is 16200, while the sum is 29.

The square root of 3553643 is about 1885.1108720709. The cubic root of 3553643 is about 152.6011941456.

The spelling of 3553643 in words is "three million, five hundred fifty-three thousand, six hundred forty-three".