663484834 has 4 divisors (see below), whose sum is σ = 995227254. Its totient is φ = 331742416.

The previous prime is 663484831. The next prime is 663484859. The reversal of 663484834 is 438484366.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 475109209 + 188375625 = 21797^2 + 13725^2 .

It is not an unprimeable number, because it can be changed into a prime (663484831) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 165871207 + ... + 165871210.

Almost surely, 2^663484834 is an apocalyptic number.

663484834 is a deficient number, since it is larger than the sum of its proper divisors (331742420).

663484834 is a wasteful number, since it uses less digits than its factorization.

663484834 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 331742419.

The product of its digits is 1327104, while the sum is 46.

The square root of 663484834 is about 25758.1993547686. The cubic root of 663484834 is about 872.1884543800.

The spelling of 663484834 in words is "six hundred sixty-three million, four hundred eighty-four thousand, eight hundred thirty-four".