8198661756 has 12 divisors (see below), whose sum is σ = 19130210792. Its totient is φ = 2732887248.

The previous prime is 8198661733. The next prime is 8198661799. The reversal of 8198661756 is 6571668918.

It is a tau number, because it is divible by the number of its divisors (12).

It is a junction number, because it is equal to n+sod(n) for n = 8198661696 and 8198661705.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 341610895 + ... + 341610918.

Almost surely, 2^8198661756 is an apocalyptic number.

It is an amenable number.

8198661756 is an abundant number, since it is smaller than the sum of its proper divisors (10931549036).

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

8198661756 is a wasteful number, since it uses less digits than its factorization.

8198661756 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 683221820 (or 683221818 counting only the distinct ones).

The product of its digits is 4354560, while the sum is 57.

The square root of 8198661756 is about 90546.4618635096. The cubic root of 8198661756 is about 2016.4199697077.

The spelling of 8198661756 in words is "eight billion, one hundred ninety-eight million, six hundred sixty-one thousand, seven hundred fifty-six".