4433681 has 4 divisors (see below), whose sum is σ = 5067072. Its totient is φ = 3800292.

The previous prime is 4433657. The next prime is 4433701. The reversal of 4433681 is 1863344.

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 4433681 - 2¹⁰ = 4432657 is a prime.

It is a super-2 number, since 2×4433681² = 39315054419522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4433621) 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, 316685 + ... + 316698.

It is an arithmetic number, because the mean of its divisors is an integer number (1266768).

Almost surely, 2^4433681 is an apocalyptic number.

It is an amenable number.

4433681 is a deficient number, since it is larger than the sum of its proper divisors (633391).

4433681 is an equidigital number, since it uses as much as digits as its factorization.

4433681 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 633390.

The product of its digits is 6912, while the sum is 29.

The square root of 4433681 is about 2105.6307843494. The cubic root of 4433681 is about 164.2813063180.

The spelling of 4433681 in words is "four million, four hundred thirty-three thousand, six hundred eighty-one".