663441 has 8 divisors (see below), whose sum is σ = 888864. Its totient is φ = 440160.

The previous prime is 663437. The next prime is 663463. The reversal of 663441 is 144366.

663441 is nontrivially palindromic in base 5.

663441 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 663441 - 2² = 663437 is a prime.

It is not an unprimeable number, because it can be changed into a prime (663241) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 450 + ... + 1236.

It is an arithmetic number, because the mean of its divisors is an integer number (111108).

2⁶⁶³⁴⁴¹ is an apocalyptic number.

It is an amenable number.

663441 is a deficient number, since it is larger than the sum of its proper divisors (225423).

663441 is a wasteful number, since it uses less digits than its factorization.

663441 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1071.

The product of its digits is 1728, while the sum is 24.

The square root of 663441 is about 814.5188763927. The cubic root of 663441 is about 87.2169246530.

The spelling of 663441 in words is "six hundred sixty-three thousand, four hundred forty-one".