99711864 has 96 divisors (see below), whose sum is σ = 322232400. Its totient is φ = 28486080.

The previous prime is 99711847. The next prime is 99711893. The reversal of 99711864 is 46811799.

It is a happy number.

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 5874 + ... + 15294.

Almost surely, 2^99711864 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 99711864, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (161116200).

99711864 is an abundant number, since it is smaller than the sum of its proper divisors (222520536).

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

99711864 is a wasteful number, since it uses less digits than its factorization.

99711864 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9450 (or 9433 counting only the distinct ones).

The product of its digits is 108864, while the sum is 45.

The square root of 99711864 is about 9985.5828072276. The cubic root of 99711864 is about 463.7126515549.

The spelling of 99711864 in words is "ninety-nine million, seven hundred eleven thousand, eight hundred sixty-four".