663363 has 16 divisors (see below), whose sum is σ = 998400. Its totient is φ = 435240.

The previous prime is 663359. The next prime is 663371. The reversal of 663363 is 363366.

663363 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 663363 - 2² = 663359 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

663363 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (663163) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1978 + ... + 2288.

It is an arithmetic number, because the mean of its divisors is an integer number (62400).

2⁶⁶³³⁶³ is an apocalyptic number.

663363 is a deficient number, since it is larger than the sum of its proper divisors (335037).

663363 is a wasteful number, since it uses less digits than its factorization.

663363 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 399 (or 393 counting only the distinct ones).

The product of its digits is 5832, while the sum is 27.

The square root of 663363 is about 814.4709939587. The cubic root of 663363 is about 87.2135065210.

The spelling of 663363 in words is "six hundred sixty-three thousand, three hundred sixty-three".