9998717634 has 48 divisors (see below), whose sum is σ = 21962304000. Its totient is φ = 3287089728.

The previous prime is 9998717621. The next prime is 9998717647. The reversal of 9998717634 is 4367178999.

It is an interprime number because it is at equal distance from previous prime (9998717621) and next prime (9998717647).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1488327 + ... + 1495029.

It is an arithmetic number, because the mean of its divisors is an integer number (457548000).

Almost surely, 2^9998717634 is an apocalyptic number.

9998717634 is an abundant number, since it is smaller than the sum of its proper divisors (11963586366).

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

9998717634 is a wasteful number, since it uses less digits than its factorization.

9998717634 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7839 (or 7836 counting only the distinct ones).

The product of its digits is 20575296, while the sum is 63.

The square root of 9998717634 is about 99993.5879644290. The cubic root of 9998717634 is about 2154.3425936352.

The spelling of 9998717634 in words is "nine billion, nine hundred ninety-eight million, seven hundred seventeen thousand, six hundred thirty-four".