99641598 has 48 divisors (see below), whose sum is σ = 236784384. Its totient is φ = 27859440.

The previous prime is 99641579. The next prime is 99641611. The reversal of 99641598 is 89514699.

It is a self number, because there is not a number n which added to its sum of digits gives 99641598.

It is a congruent number.

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, 10213 + ... + 17423.

It is an arithmetic number, because the mean of its divisors is an integer number (4933008).

Almost surely, 2^99641598 is an apocalyptic number.

99641598 is a gapful number since it is divisible by the number (98) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 99641598, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (118392192).

99641598 is an abundant number, since it is smaller than the sum of its proper divisors (137142786).

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

99641598 is a wasteful number, since it uses less digits than its factorization.

99641598 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7277 (or 7270 counting only the distinct ones).

The product of its digits is 699840, while the sum is 51.

The square root of 99641598 is about 9982.0638146628. The cubic root of 99641598 is about 463.6037013305.

The spelling of 99641598 in words is "ninety-nine million, six hundred forty-one thousand, five hundred ninety-eight".