663883 has 4 divisors (see below), whose sum is σ = 724248. Its totient is φ = 603520.

The previous prime is 663881. The next prime is 663893. The reversal of 663883 is 388366.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 663883 - 2¹ = 663881 is a prime.

It is a Duffinian number.

663883 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (663881) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 30166 + ... + 30187.

It is an arithmetic number, because the mean of its divisors is an integer number (181062).

2⁶⁶³⁸⁸³ is an apocalyptic number.

663883 is a deficient number, since it is larger than the sum of its proper divisors (60365).

663883 is a wasteful number, since it uses less digits than its factorization.

663883 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60364.

The product of its digits is 20736, while the sum is 34.

The square root of 663883 is about 814.7901570343. The cubic root of 663883 is about 87.2362890089.

The spelling of 663883 in words is "six hundred sixty-three thousand, eight hundred eighty-three".