663797698 has 16 divisors (see below), whose sum is σ = 1007107200. Its totient is φ = 328114800.

The previous prime is 663797681. The next prime is 663797707. The reversal of 663797698 is 896797366.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 66328 + ... + 75676.

It is an arithmetic number, because the mean of its divisors is an integer number (62944200).

Almost surely, 2^663797698 is an apocalyptic number.

663797698 is a deficient number, since it is larger than the sum of its proper divisors (343309502).

663797698 is a wasteful number, since it uses less digits than its factorization.

663797698 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9753.

The product of its digits is 20575296, while the sum is 61.

The square root of 663797698 is about 25764.2717343223. The cubic root of 663797698 is about 872.3255253295.

The spelling of 663797698 in words is "six hundred sixty-three million, seven hundred ninety-seven thousand, six hundred ninety-eight".