663834234 has 64 divisors (see below), whose sum is σ = 1587548160. Its totient is φ = 180935040.

The previous prime is 663834229. The next prime is 663834253. The reversal of 663834234 is 432438366.

It is a Smith number, since the sum of its digits (39) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a junction number, because it is equal to n+sod(n) for n = 663834192 and 663834201.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 502627 + ... + 503945.

It is an arithmetic number, because the mean of its divisors is an integer number (24805440).

Almost surely, 2^663834234 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 663834234, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (793774080).

663834234 is an abundant number, since it is smaller than the sum of its proper divisors (923713926).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

663834234 is a wasteful number, since it uses less digits than its factorization.

663834234 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1875.

The product of its digits is 248832, while the sum is 39.

The square root of 663834234 is about 25764.9807684772. The cubic root of 663834234 is about 872.3415295533.

The spelling of 663834234 in words is "six hundred sixty-three million, eight hundred thirty-four thousand, two hundred thirty-four".