663080 has 48 divisors (see below), whose sum is σ = 1651860. Its totient is φ = 239360.

The previous prime is 663071. The next prime is 663097. The reversal of 663080 is 80366.

It can be written as a sum of positive squares in 2 ways, for example, as 662596 + 484 = 814^2 + 22^2 .

It is an unprimeable number.

663080 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 11 ways as a sum of consecutive naturals, for example, 4772 + ... + 4908.

2⁶⁶³⁰⁸⁰ is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 663080, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (825930).

663080 is an abundant number, since it is smaller than the sum of its proper divisors (988780).

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

663080 is a wasteful number, since it uses less digits than its factorization.

663080 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 170 (or 155 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 23.

The square root of 663080 is about 814.2972430262. The cubic root of 663080 is about 87.2011025868.

The spelling of 663080 in words is "six hundred sixty-three thousand, eighty".