99687120 has 160 divisors (see below), whose sum is σ = 337478400. Its totient is φ = 24195072.

The previous prime is 99687073. The next prime is 99687157. The reversal of 99687120 is 2178699.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 277501 + ... + 277859.

It is an arithmetic number, because the mean of its divisors is an integer number (2109240).

Almost surely, 2^99687120 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 99687120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (168739200).

99687120 is an abundant number, since it is smaller than the sum of its proper divisors (237791280).

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

99687120 is a wasteful number, since it uses less digits than its factorization.

99687120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 477 (or 471 counting only the distinct ones).

The product of its (nonzero) digits is 54432, while the sum is 42.

The square root of 99687120 is about 9984.3437440825. The cubic root of 99687120 is about 463.6742908402.

The spelling of 99687120 in words is "ninety-nine million, six hundred eighty-seven thousand, one hundred twenty".