998646594 has 64 divisors (see below), whose sum is σ = 2254307328. Its totient is φ = 292291200.

The previous prime is 998646587. The next prime is 998646619. The reversal of 998646594 is 495646899.

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 31 ways as a sum of consecutive naturals, for example, 276927 + ... + 280509.

It is an arithmetic number, because the mean of its divisors is an integer number (35223552).

Almost surely, 2^998646594 is an apocalyptic number.

998646594 is the 16892-nd nonagonal number.

It is a practical number, because each smaller number is the sum of distinct divisors of 998646594, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1127153664).

998646594 is an abundant number, since it is smaller than the sum of its proper divisors (1255660734).

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

998646594 is a wasteful number, since it uses less digits than its factorization.

998646594 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3743.

The product of its digits is 16796160, while the sum is 60.

The square root of 998646594 is about 31601.3701285245. The cubic root of 998646594 is about 999.5486609904.

The spelling of 998646594 in words is "nine hundred ninety-eight million, six hundred forty-six thousand, five hundred ninety-four".