3543643 has 2 divisors, whose sum is σ = 3543644. Its totient is φ = 3543642.

The previous prime is 3543629. The next prime is 3543677. The reversal of 3543643 is 3463453.

3543643 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 3543643 - 2⁵ = 3543611 is a prime.

It is a super-2 number, since 2×3543643² = 25114811422898, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (3543613) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1771821 + 1771822.

It is an arithmetic number, because the mean of its divisors is an integer number (1771822).

Almost surely, 2^3543643 is an apocalyptic number.

3543643 is a deficient number, since it is larger than the sum of its proper divisors (1).

3543643 is an equidigital number, since it uses as much as digits as its factorization.

3543643 is an odious number, because the sum of its binary digits is odd.

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

The square root of 3543643 is about 1882.4566396069. The cubic root of 3543643 is about 152.4579190530.

It can be divided in two parts, 3543 and 643, that added together give a triangular number (4186 = T₉₁).

The spelling of 3543643 in words is "three million, five hundred forty-three thousand, six hundred forty-three".