663260 has 24 divisors (see below), whose sum is σ = 1500576. Its totient is φ = 244800.

The previous prime is 663241. The next prime is 663263. The reversal of 663260 is 62366.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (663263) by changing a digit.

663260 is an untouchable number, because it is not equal to the sum of proper divisors of any 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 7 ways as a sum of consecutive naturals, for example, 1016 + ... + 1535.

It is an arithmetic number, because the mean of its divisors is an integer number (62524).

2⁶⁶³²⁶⁰ is an apocalyptic number.

It is an amenable number.

663260 is an abundant number, since it is smaller than the sum of its proper divisors (837316).

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

663260 is a wasteful number, since it uses less digits than its factorization.

663260 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2573 (or 2571 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 23.

The square root of 663260 is about 814.4077602774. The cubic root of 663260 is about 87.2089924234.

The spelling of 663260 in words is "six hundred sixty-three thousand, two hundred sixty".