998312650 has 12 divisors (see below), whose sum is σ = 1856861622. Its totient is φ = 399325040.

The previous prime is 998312633. The next prime is 998312657. The reversal of 998312650 is 56213899.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 823517809 + 174794841 = 28697^2 + 13221^2 .

It is a junction number, because it is equal to n+sod(n) for n = 998312597 and 998312606.

It is not an unprimeable number, because it can be changed into a prime (998312657) by changing a digit.

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 5 ways as a sum of consecutive naturals, for example, 9983077 + ... + 9983176.

Almost surely, 2^998312650 is an apocalyptic number.

998312650 is a deficient number, since it is larger than the sum of its proper divisors (858548972).

998312650 is a wasteful number, since it uses less digits than its factorization.

998312650 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19966265 (or 19966260 counting only the distinct ones).

The product of its (nonzero) digits is 116640, while the sum is 43.

The square root of 998312650 is about 31596.0859917807. The cubic root of 998312650 is about 999.4372333531.

The spelling of 998312650 in words is "nine hundred ninety-eight million, three hundred twelve thousand, six hundred fifty".