99985536 has 128 divisors (see below), whose sum is σ = 337334400. Its totient is φ = 28560384.

The previous prime is 99985489. The next prime is 99985547. The reversal of 99985536 is 63558999.

It is a tau number, because it is divible by the number of its divisors (128).

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

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, 22126 + ... + 26258.

It is an arithmetic number, because the mean of its divisors is an integer number (2635425).

Almost surely, 2^99985536 is an apocalyptic number.

99985536 is a gapful number since it is divisible by the number (96) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 99985536, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (168667200).

99985536 is an abundant number, since it is smaller than the sum of its proper divisors (237348864).

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

99985536 is a wasteful number, since it uses less digits than its factorization.

99985536 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4163 (or 4145 counting only the distinct ones).

The product of its digits is 2624400, while the sum is 54.

The square root of 99985536 is about 9999.2767738472. The cubic root of 99985536 is about 464.1365036353.

The spelling of 99985536 in words is "ninety-nine million, nine hundred eighty-five thousand, five hundred thirty-six".