998998016 has 64 divisors (see below), whose sum is σ = 2047313400. Its totient is φ = 487194624.

The previous prime is 998997997. The next prime is 998998097. The reversal of 998998016 is 610899899.

It is a tau number, because it is divible by the number of its divisors (64).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1408670 + ... + 1409378.

Almost surely, 2^998998016 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 998998016, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1023656700).

998998016 is an abundant number, since it is smaller than the sum of its proper divisors (1048315384).

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

998998016 is an frugal number, since it uses more digits than its factorization.

998998016 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 782 (or 754 counting only the distinct ones).

The product of its (nonzero) digits is 2519424, while the sum is 59.

The square root of 998998016 is about 31606.9298730516. The cubic root of 998998016 is about 999.6658937188.

The spelling of 998998016 in words is "nine hundred ninety-eight million, nine hundred ninety-eight thousand, sixteen".