3531643 has 4 divisors (see below), whose sum is σ = 3541248. Its totient is φ = 3522040.

The previous prime is 3531623. The next prime is 3531659. The reversal of 3531643 is 3461353.

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 3531643 - 2²¹ = 1434491 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3531623) 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, 4228 + ... + 4993.

It is an arithmetic number, because the mean of its divisors is an integer number (885312).

Almost surely, 2^3531643 is an apocalyptic number.

3531643 is a deficient number, since it is larger than the sum of its proper divisors (9605).

3531643 is an equidigital number, since it uses as much as digits as its factorization.

3531643 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9604.

The product of its digits is 3240, while the sum is 25.

The square root of 3531643 is about 1879.2666122719. The cubic root of 3531643 is about 152.2856326966.

Adding to 3531643 its reverse (3461353), we get a palindrome (6992996).

The spelling of 3531643 in words is "three million, five hundred thirty-one thousand, six hundred forty-three".