198763656 has 64 divisors (see below), whose sum is σ = 611587200. Its totient is φ = 52420608.

The previous prime is 198763619. The next prime is 198763687. The reversal of 198763656 is 656367891.

It is a junction number, because it is equal to n+sod(n) for n = 198763599 and 198763608.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 43321 + ... + 47688.

It is an arithmetic number, because the mean of its divisors is an integer number (9556050).

Almost surely, 2^198763656 is an apocalyptic number.

It is an amenable number.

198763656 is an abundant number, since it is smaller than the sum of its proper divisors (412823544).

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

198763656 is a wasteful number, since it uses less digits than its factorization.

198763656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 91038 (or 91034 counting only the distinct ones).

The product of its digits is 1632960, while the sum is 51.

The square root of 198763656 is about 14098.3564999613. The cubic root of 198763656 is about 583.5960254303.

It can be divided in two parts, 19876 and 3656, that added together give a palindrome (23532).

The spelling of 198763656 in words is "one hundred ninety-eight million, seven hundred sixty-three thousand, six hundred fifty-six".