3673561 has 4 divisors (see below), whose sum is σ = 3683124. Its totient is φ = 3664000.

The previous prime is 3673529. The next prime is 3673577. The reversal of 3673561 is 1653763.

3673561 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 2742336 + 931225 = 1656^2 + 965^2 .

It is a cyclic number.

It is not a de Polignac number, because 3673561 - 2⁵ = 3673529 is a prime.

It is a d-powerful number, because it can be written as 3¹⁰ + 6⁸ + 7 + 3¹¹ + 5⁷ + 6⁸ + 1 .

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3673591) 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 in 3 ways as a sum of consecutive naturals, for example, 4180 + ... + 4981.

It is an arithmetic number, because the mean of its divisors is an integer number (920781).

Almost surely, 2^3673561 is an apocalyptic number.

It is an amenable number.

3673561 is a deficient number, since it is larger than the sum of its proper divisors (9563).

3673561 is an equidigital number, since it uses as much as digits as its factorization.

3673561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9562.

The product of its digits is 11340, while the sum is 31.

The square root of 3673561 is about 1916.6535941583. The cubic root of 3673561 is about 154.2987538378.

The spelling of 3673561 in words is "three million, six hundred seventy-three thousand, five hundred sixty-one".