663383 has 8 divisors (see below), whose sum is σ = 766752. Its totient is φ = 562176.

The previous prime is 663371. The next prime is 663407. The reversal of 663383 is 383366.

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

It is a cyclic number.

It is not a de Polignac number, because 663383 - 2⁶ = 663319 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (663283) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 191 + ... + 1167.

It is an arithmetic number, because the mean of its divisors is an integer number (95844).

2⁶⁶³³⁸³ is an apocalyptic number.

663383 is a deficient number, since it is larger than the sum of its proper divisors (103369).

663383 is an equidigital number, since it uses as much as digits as its factorization.

663383 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1081.

The product of its digits is 7776, while the sum is 29.

The square root of 663383 is about 814.4832717742. The cubic root of 663383 is about 87.2143829907.

The spelling of 663383 in words is "six hundred sixty-three thousand, three hundred eighty-three".