998356675684 has 27 divisors (see below), whose sum is σ = 1757568907731. Its totient is φ = 496211778360.

The previous prime is 998356675681. The next prime is 998356675691. The reversal of 998356675684 is 486576653899.

The square root of 998356675684 is 999178.

It is a perfect power (a square), and thus also a powerful number.

998356675684 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Smith number, since the sum of its digits (76) coincides with the sum of the digits of its prime factors.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 998356675684.

It is not an unprimeable number, because it can be changed into a prime (998356675681) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 357704329 + ... + 357707119.

Almost surely, 2^998356675684 is an apocalyptic number.

998356675684 is the 999178-th square number.

It is an amenable number.

998356675684 is a deficient number, since it is larger than the sum of its proper divisors (759212232047).

998356675684 is an frugal number, since it uses more digits than its factorization.

998356675684 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5944 (or 2972 counting only the distinct ones).

The product of its digits is 2351462400, while the sum is 76.

The spelling of 998356675684 in words is "nine hundred ninety-eight billion, three hundred fifty-six million, six hundred seventy-five thousand, six hundred eighty-four".