663830 has 8 divisors (see below), whose sum is σ = 1194912. Its totient is φ = 265528.

The previous prime is 663827. The next prime is 663853. The reversal of 663830 is 38366.

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

It is a self number, because there is not a number n which added to its sum of digits gives 663830.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 33182 + ... + 33201.

It is an arithmetic number, because the mean of its divisors is an integer number (149364).

2⁶⁶³⁸³⁰ is an apocalyptic number.

663830 is a deficient number, since it is larger than the sum of its proper divisors (531082).

663830 is a wasteful number, since it uses less digits than its factorization.

663830 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66390.

The product of its (nonzero) digits is 2592, while the sum is 26.

The square root of 663830 is about 814.7576326737. The cubic root of 663830 is about 87.2339674923.

It can be divided in two parts, 6 and 63830, that added together give a palindrome (63836).

The spelling of 663830 in words is "six hundred sixty-three thousand, eight hundred thirty".