663480 has 96 divisors (see below), whose sum is σ = 2293200. Its totient is φ = 165888.

The previous prime is 663463. The next prime is 663517. The reversal of 663480 is 84366.

It is a congruent number.

It is an unprimeable number.

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 23 ways as a sum of consecutive naturals, for example, 6792 + ... + 6888.

2⁶⁶³⁴⁸⁰ is an apocalyptic number.

663480 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 663480, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1146600).

663480 is an abundant number, since it is smaller than the sum of its proper divisors (1629720).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

663480 is a wasteful number, since it uses less digits than its factorization.

663480 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 133 (or 126 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 27.

The square root of 663480 is about 814.5428165542. The cubic root of 663480 is about 87.2186336186.

The spelling of 663480 in words is "six hundred sixty-three thousand, four hundred eighty".