663429 has 8 divisors (see below), whose sum is σ = 952672. Its totient is φ = 408240.

The previous prime is 663409. The next prime is 663437. The reversal of 663429 is 924366.

663429 is nontrivially palindromic in base 2.

663429 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 663429 - 2⁷ = 663301 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a plaindrome in base 14.

It is a junction number, because it is equal to n+sod(n) for n = 663396 and 663405.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (663409) 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, 8467 + ... + 8544.

It is an arithmetic number, because the mean of its divisors is an integer number (119084).

2⁶⁶³⁴²⁹ is an apocalyptic number.

It is an amenable number.

663429 is a deficient number, since it is larger than the sum of its proper divisors (289243).

663429 is a wasteful number, since it uses less digits than its factorization.

663429 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17027.

The product of its digits is 7776, while the sum is 30.

The square root of 663429 is about 814.5115100476. The cubic root of 663429 is about 87.2163988040.

The spelling of 663429 in words is "six hundred sixty-three thousand, four hundred twenty-nine".