663802 has 8 divisors (see below), whose sum is σ = 1012212. Its totient is φ = 326400.

The previous prime is 663797. The next prime is 663821. The reversal of 663802 is 208366.

It can be written as a sum of positive squares in 2 ways, for example, as 641601 + 22201 = 801^2 + 149^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2599 + ... + 2842.

2⁶⁶³⁸⁰² is an apocalyptic number.

663802 is a deficient number, since it is larger than the sum of its proper divisors (348410).

663802 is a wasteful number, since it uses less digits than its factorization.

663802 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5504.

The product of its (nonzero) digits is 1728, while the sum is 25.

The square root of 663802 is about 814.7404494684. The cubic root of 663802 is about 87.2327409807.

The spelling of 663802 in words is "six hundred sixty-three thousand, eight hundred two".