663434 has 8 divisors (see below), whose sum is σ = 1010208. Its totient is φ = 326700.

The previous prime is 663409. The next prime is 663437. The reversal of 663434 is 434366.

663434 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 a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (663437) 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, 2342 + ... + 2609.

It is an arithmetic number, because the mean of its divisors is an integer number (126276).

2⁶⁶³⁴³⁴ is an apocalyptic number.

663434 is a deficient number, since it is larger than the sum of its proper divisors (346774).

663434 is a wasteful number, since it uses less digits than its factorization.

663434 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5020.

The product of its digits is 5184, while the sum is 26.

The square root of 663434 is about 814.5145793661. The cubic root of 663434 is about 87.2166179086.

The spelling of 663434 in words is "six hundred sixty-three thousand, four hundred thirty-four".