3656443 has 8 divisors (see below), whose sum is σ = 4198880. Its totient is φ = 3119040.

The previous prime is 3656441. The next prime is 3656447. The reversal of 3656443 is 3446563.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 3656443 - 2¹ = 3656441 is a prime.

It is not an unprimeable number, because it can be changed into a prime (3656441) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 463 + ... + 2743.

It is an arithmetic number, because the mean of its divisors is an integer number (524860).

Almost surely, 2^3656443 is an apocalyptic number.

3656443 is a deficient number, since it is larger than the sum of its proper divisors (542437).

3656443 is a wasteful number, since it uses less digits than its factorization.

3656443 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2517.

The product of its digits is 25920, while the sum is 31.

The square root of 3656443 is about 1912.1827841501. The cubic root of 3656443 is about 154.0587143294.

The spelling of 3656443 in words is "three million, six hundred fifty-six thousand, four hundred forty-three".