663693434 has 8 divisors (see below), whose sum is σ = 995649600. Its totient is φ = 331810236.

The previous prime is 663693431. The next prime is 663693463. The reversal of 663693434 is 434396366.

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

It is not an unprimeable number, because it can be changed into a prime (663693431) 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, 25007 + ... + 44189.

It is an arithmetic number, because the mean of its divisors is an integer number (124456200).

Almost surely, 2^663693434 is an apocalyptic number.

663693434 is a deficient number, since it is larger than the sum of its proper divisors (331956166).

663693434 is a wasteful number, since it uses less digits than its factorization.

663693434 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36484.

The product of its digits is 839808, while the sum is 44.

The square root of 663693434 is about 25762.2482326368. The cubic root of 663693434 is about 872.2798503137.

The spelling of 663693434 in words is "six hundred sixty-three million, six hundred ninety-three thousand, four hundred thirty-four".