663273 has 12 divisors (see below), whose sum is σ = 1031940. Its totient is φ = 408096.

The previous prime is 663269. The next prime is 663281. The reversal of 663273 is 372366.

It can be written as a sum of positive squares in 2 ways, for example, as 127449 + 535824 = 357^2 + 732^2 .

It is not a de Polignac number, because 663273 - 2² = 663269 is a prime.

It is not an unprimeable number, because it can be changed into a prime (663203) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 2718 + ... + 2951.

It is an arithmetic number, because the mean of its divisors is an integer number (85995).

2⁶⁶³²⁷³ is an apocalyptic number.

It is an amenable number.

663273 is a deficient number, since it is larger than the sum of its proper divisors (368667).

663273 is a wasteful number, since it uses less digits than its factorization.

663273 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5688 (or 5685 counting only the distinct ones).

The product of its digits is 4536, while the sum is 27.

The square root of 663273 is about 814.4157414982. The cubic root of 663273 is about 87.2095621896.

The spelling of 663273 in words is "six hundred sixty-three thousand, two hundred seventy-three".