408663 has 12 divisors (see below), whose sum is σ = 625248. Its totient is φ = 256320.

The previous prime is 408659. The next prime is 408677. The reversal of 408663 is 366804.

It is not a de Polignac number, because 408663 - 2² = 408659 is a prime.

It is a hoax number, since the sum of its digits (27) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (408623) 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, 1183 + ... + 1488.

It is an arithmetic number, because the mean of its divisors is an integer number (52104).

2⁴⁰⁸⁶⁶³ is an apocalyptic number.

408663 is a deficient number, since it is larger than the sum of its proper divisors (216585).

408663 is a wasteful number, since it uses less digits than its factorization.

408663 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2694 (or 2691 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 27.

The square root of 408663 is about 639.2675496222. The cubic root of 408663 is about 74.2087482995.

The spelling of 408663 in words is "four hundred eight thousand, six hundred sixty-three".