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663303 = 3221101
BaseRepresentation
bin10100001111100000111
31020200212210
42201330013
5132211203
622114503
75431554
oct2417407
91220783
10663303
11413393
1227ba33
131a2bb4
14133a2b
15d1803
hexa1f07

663303 has 4 divisors (see below), whose sum is σ = 884408. Its totient is φ = 442200.

The previous prime is 663301. The next prime is 663319. The reversal of 663303 is 303366.

663303 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 663303 - 21 = 663301 is a prime.

It is a D-number.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 663303.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (663301) 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, 110548 + ... + 110553.

It is an arithmetic number, because the mean of its divisors is an integer number (221102).

2663303 is an apocalyptic number.

663303 is a deficient number, since it is larger than the sum of its proper divisors (221105).

663303 is a wasteful number, since it uses less digits than its factorization.

663303 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 221104.

The product of its (nonzero) digits is 972, while the sum is 21.

The square root of 663303 is about 814.4341594015. The cubic root of 663303 is about 87.2108770064.

Adding to 663303 its reverse (303366), we get a palindrome (966669).

The spelling of 663303 in words is "six hundred sixty-three thousand, three hundred three".

Divisors: 1 3 221101 663303