998515674 has 112 divisors (see below), whose sum is σ = 2442199200. Its totient is φ = 304220448.

The previous prime is 998515663. The next prime is 998515697. The reversal of 998515674 is 476515899.

998515674 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-3 number, since 3×998515674³ (a number of 28 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 998515674.

It is an unprimeable number.

It is a polite number, since it can be written in 55 ways as a sum of consecutive naturals, for example, 2634417 + ... + 2634795.

It is an arithmetic number, because the mean of its divisors is an integer number (21805350).

Almost surely, 2^998515674 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 998515674, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1221099600).

998515674 is an abundant number, since it is smaller than the sum of its proper divisors (1443683526).

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

998515674 is a wasteful number, since it uses less digits than its factorization.

With its successor (998515675) it forms an eRAP, since the sums of their prime factors are consecutive (551 and 552).

998515674 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 551 (or 536 counting only the distinct ones).

The product of its digits is 2721600, while the sum is 54.

The square root of 998515674 is about 31599.2986314570. The cubic root of 998515674 is about 999.5049796620.

The spelling of 998515674 in words is "nine hundred ninety-eight million, five hundred fifteen thousand, six hundred seventy-four".