4328661 has 4 divisors (see below), whose sum is σ = 5771552. Its totient is φ = 2885772.

The previous prime is 4328641. The next prime is 4328671. The reversal of 4328661 is 1668234.

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 not a de Polignac number, because 4328661 - 2⁵ = 4328629 is a prime.

It is a D-number.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4328641) 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, 721441 + ... + 721446.

It is an arithmetic number, because the mean of its divisors is an integer number (1442888).

Almost surely, 2^4328661 is an apocalyptic number.

It is an amenable number.

4328661 is a deficient number, since it is larger than the sum of its proper divisors (1442891).

4328661 is a wasteful number, since it uses less digits than its factorization.

4328661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1442890.

The product of its digits is 6912, while the sum is 30.

The square root of 4328661 is about 2080.5434386237. The cubic root of 4328661 is about 162.9738249462.

The spelling of 4328661 in words is "four million, three hundred twenty-eight thousand, six hundred sixty-one".