4032661 has 4 divisors (see below), whose sum is σ = 4038112. Its totient is φ = 4027212.

The previous prime is 4032641. The next prime is 4032671. The reversal of 4032661 is 1662304.

4032661 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, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 4032661 - 2⁷ = 4032533 is a prime.

It is a Duffinian number.

4032661 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4032601) 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, 1401 + ... + 3166.

It is an arithmetic number, because the mean of its divisors is an integer number (1009528).

Almost surely, 2^4032661 is an apocalyptic number.

It is an amenable number.

4032661 is a deficient number, since it is larger than the sum of its proper divisors (5451).

4032661 is an equidigital number, since it uses as much as digits as its factorization.

4032661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5450.

The product of its (nonzero) digits is 864, while the sum is 22.

The square root of 4032661 is about 2008.1486498763. The cubic root of 4032661 is about 159.1709854491.

Adding to 4032661 its reverse (1662304), we get a palindrome (5694965).

The spelling of 4032661 in words is "four million, thirty-two thousand, six hundred sixty-one".