99660120 has 192 divisors, whose sum is σ = 368621280. Its totient is φ = 21417984.

The previous prime is 99660109. The next prime is 99660131. The reversal of 99660120 is 2106699.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (99660109) and next prime (99660131).

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 47 ways as a sum of consecutive naturals, for example, 99462 + ... + 100458.

Almost surely, 2^99660120 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 99660120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (184310640).

99660120 is an abundant number, since it is smaller than the sum of its proper divisors (268961160).

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

99660120 is a wasteful number, since it uses less digits than its factorization.

99660120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1042 (or 1031 counting only the distinct ones).

The product of its (nonzero) digits is 5832, while the sum is 33.

The square root of 99660120 is about 9982.9915356069. The cubic root of 99660120 is about 463.6324253973.

It can be divided in two parts, 996 and 60120, that added together give a palindrome (61116).

The spelling of 99660120 in words is "ninety-nine million, six hundred sixty thousand, one hundred twenty".