3505643 has 4 divisors (see below), whose sum is σ = 3515928. Its totient is φ = 3495360.

The previous prime is 3505631. The next prime is 3505651. The reversal of 3505643 is 3465053.

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 3505643 - 2⁴ = 3505627 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3505613) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4613 + ... + 5318.

It is an arithmetic number, because the mean of its divisors is an integer number (878982).

Almost surely, 2^3505643 is an apocalyptic number.

3505643 is a deficient number, since it is larger than the sum of its proper divisors (10285).

3505643 is an equidigital number, since it uses as much as digits as its factorization.

3505643 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10284.

The product of its (nonzero) digits is 5400, while the sum is 26.

The square root of 3505643 is about 1872.3362411704. The cubic root of 3505643 is about 151.9110022639.

The spelling of 3505643 in words is "three million, five hundred five thousand, six hundred forty-three".