663299 has 16 divisors (see below), whose sum is σ = 842688. Its totient is φ = 508032.

The previous prime is 663283. The next prime is 663301. The reversal of 663299 is 992366.

It is not a de Polignac number, because 663299 - 2⁴ = 663283 is a prime.

It is a zygodrome in base 6.

It is not an unprimeable number, because it can be changed into a prime (663209) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3269 + ... + 3465.

It is an arithmetic number, because the mean of its divisors is an integer number (52668).

2⁶⁶³²⁹⁹ is an apocalyptic number.

663299 is a deficient number, since it is larger than the sum of its proper divisors (179389).

663299 is a wasteful number, since it uses less digits than its factorization.

663299 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 254.

The product of its digits is 17496, while the sum is 35.

The square root of 663299 is about 814.4317037051. The cubic root of 663299 is about 87.2107016998.

The spelling of 663299 in words is "six hundred sixty-three thousand, two hundred ninety-nine".