663448 has 16 divisors (see below), whose sum is σ = 1255680. Its totient is φ = 328608.

The previous prime is 663437. The next prime is 663463. The reversal of 663448 is 844366.

663448 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

663448 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 690 + ... + 1342.

It is an arithmetic number, because the mean of its divisors is an integer number (78480).

2⁶⁶³⁴⁴⁸ is an apocalyptic number.

It is an amenable number.

663448 is a deficient number, since it is larger than the sum of its proper divisors (592232).

663448 is a wasteful number, since it uses less digits than its factorization.

663448 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 786 (or 782 counting only the distinct ones).

The product of its digits is 13824, while the sum is 31.

The square root of 663448 is about 814.5231733966. The cubic root of 663448 is about 87.2172313954.

It can be divided in two parts, 663 and 448, that added together give a palindrome (1111).

The spelling of 663448 in words is "six hundred sixty-three thousand, four hundred forty-eight".