99717216 has 24 divisors (see below), whose sum is σ = 261757944. Its totient is φ = 33239040.

The previous prime is 99717181. The next prime is 99717217. The reversal of 99717216 is 61271799.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (24).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (99717217) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 519265 + ... + 519456.

It is an arithmetic number, because the mean of its divisors is an integer number (10906581).

Almost surely, 2^99717216 is an apocalyptic number.

99717216 is a gapful number since it is divisible by the number (96) formed by its first and last digit.

It is an amenable number.

99717216 is an abundant number, since it is smaller than the sum of its proper divisors (162040728).

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

99717216 is a wasteful number, since it uses less digits than its factorization.

99717216 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1038734 (or 1038726 counting only the distinct ones).

The product of its digits is 47628, while the sum is 42.

The square root of 99717216 is about 9985.8507899928. The cubic root of 99717216 is about 463.7209479455.

The spelling of 99717216 in words is "ninety-nine million, seven hundred seventeen thousand, two hundred sixteen".