99906750 has 192 divisors, whose sum is σ = 299557440. Its totient is φ = 24624000.

The previous prime is 99906743. The next prime is 99906809. The reversal of 99906750 is 5760999.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a junction number, because it is equal to n+sod(n) for n = 99906696 and 99906705.

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 95 ways as a sum of consecutive naturals, for example, 2436730 + ... + 2436770.

It is an arithmetic number, because the mean of its divisors is an integer number (1560195).

Almost surely, 2^99906750 is an apocalyptic number.

99906750 is a gapful number since it is divisible by the number (90) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 99906750, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (149778720).

99906750 is an abundant number, since it is smaller than the sum of its proper divisors (199650690).

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

99906750 is a wasteful number, since it uses less digits than its factorization.

99906750 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 105 (or 70 counting only the distinct ones).

The product of its (nonzero) digits is 153090, while the sum is 45.

The square root of 99906750 is about 9995.3364125476. The cubic root of 99906750 is about 464.0145624393.

The spelling of 99906750 in words is "ninety-nine million, nine hundred six thousand, seven hundred fifty".