99998637 has 8 divisors (see below), whose sum is σ = 133536480. Its totient is φ = 66563280.

The previous prime is 99998611. The next prime is 99998663. The reversal of 99998637 is 73689999.

It is an interprime number because it is at equal distance from previous prime (99998611) and next prime (99998663).

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 99998637 - 2¹⁵ = 99965869 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (99994637) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 23314 + ... + 27267.

It is an arithmetic number, because the mean of its divisors is an integer number (16692060).

Almost surely, 2^99998637 is an apocalyptic number.

It is an amenable number.

99998637 is a deficient number, since it is larger than the sum of its proper divisors (33537843).

99998637 is a wasteful number, since it uses less digits than its factorization.

99998637 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51243.

The product of its digits is 6613488, while the sum is 60.

The square root of 99998637 is about 9999.9318497678. The cubic root of 99998637 is about 464.1567745232.

The spelling of 99998637 in words is "ninety-nine million, nine hundred ninety-eight thousand, six hundred thirty-seven".