663494 has 16 divisors (see below), whose sum is σ = 1085280. Its totient is φ = 304200.

The previous prime is 663463. The next prime is 663517. The reversal of 663494 is 494366.

663494 is nontrivially palindromic in base 12.

It is an Ulam number.

It is a d-powerful number, because it can be written as 6² + 6³ + 4⁸ + 3¹² + 9³ + 4⁸ .

Its product of digits (15552) is a multiple of the sum of its prime factors (192).

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 663494.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 663494.

It is an unprimeable 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, 4319 + ... + 4469.

It is an arithmetic number, because the mean of its divisors is an integer number (67830).

2⁶⁶³⁴⁹⁴ is an apocalyptic number.

663494 is a deficient number, since it is larger than the sum of its proper divisors (421786).

663494 is a wasteful number, since it uses less digits than its factorization.

663494 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 192 (or 166 counting only the distinct ones).

The product of its digits is 15552, while the sum is 32.

The square root of 663494 is about 814.5514102867. The cubic root of 663494 is about 87.2192470771.

The spelling of 663494 in words is "six hundred sixty-three thousand, four hundred ninety-four".