9998615 has 16 divisors (see below), whose sum is σ = 13219200. Its totient is φ = 7199520.

The previous prime is 9998603. The next prime is 9998623. The reversal of 9998615 is 5168999.

It is not a de Polignac number, because 9998615 - 2²² = 5804311 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 9998615.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5036 + ... + 6734.

It is an arithmetic number, because the mean of its divisors is an integer number (826200).

Almost surely, 2^9998615 is an apocalyptic number.

9998615 is a deficient number, since it is larger than the sum of its proper divisors (3220585).

9998615 is a wasteful number, since it uses less digits than its factorization.

9998615 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1822.

The product of its digits is 174960, while the sum is 47.

The square root of 9998615 is about 3162.0586648574. The cubic root of 9998615 is about 215.4335222371.

It can be divided in two parts, 99986 and 15, that added together give a palindrome (100001).

The spelling of 9998615 in words is "nine million, nine hundred ninety-eight thousand, six hundred fifteen".