3646543 has 4 divisors (see below), whose sum is σ = 3656448. Its totient is φ = 3636640.

The previous prime is 3646541. The next prime is 3646553. The reversal of 3646543 is 3456463.

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 3646543 - 2¹ = 3646541 is a prime.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3646541) 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, 4378 + ... + 5143.

It is an arithmetic number, because the mean of its divisors is an integer number (914112).

Almost surely, 2^3646543 is an apocalyptic number.

3646543 is a deficient number, since it is larger than the sum of its proper divisors (9905).

3646543 is an equidigital number, since it uses as much as digits as its factorization.

3646543 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9904.

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

The square root of 3646543 is about 1909.5923648779. The cubic root of 3646543 is about 153.9195481282.

The spelling of 3646543 in words is "three million, six hundred forty-six thousand, five hundred forty-three".