663229 has 4 divisors (see below), whose sum is σ = 757984. Its totient is φ = 568476.

The previous prime is 663209. The next prime is 663239. The reversal of 663229 is 922366.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 922366 = 2 ⋅461183.

It is a cyclic number.

It is not a de Polignac number, because 663229 - 2¹³ = 655037 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 663197 and 663206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (663209) 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, 47367 + ... + 47380.

It is an arithmetic number, because the mean of its divisors is an integer number (189496).

2⁶⁶³²²⁹ is an apocalyptic number.

It is an amenable number.

663229 is a deficient number, since it is larger than the sum of its proper divisors (94755).

663229 is an equidigital number, since it uses as much as digits as its factorization.

663229 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 94754.

The product of its digits is 3888, while the sum is 28.

The square root of 663229 is about 814.3887278198. The cubic root of 663229 is about 87.2076337199.

The spelling of 663229 in words is "six hundred sixty-three thousand, two hundred twenty-nine".