99175680 has 108 divisors (see below), whose sum is σ = 343177380. Its totient is φ = 26443776.

The previous prime is 99175663. The next prime is 99175717. The reversal of 99175680 is 8657199.

It can be written as a sum of positive squares in 2 ways, for example, as 29419776 + 69755904 = 5424^2 + 8352^2 .

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

It is a congruent number.

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 7216 + ... + 15824.

Almost surely, 2^99175680 is an apocalyptic number.

99175680 is a gapful number since it is divisible by the number (90) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 99175680, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (171588690).

99175680 is an abundant number, since it is smaller than the sum of its proper divisors (244001700).

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

99175680 is a wasteful number, since it uses less digits than its factorization.

99175680 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8636 (or 8619 counting only the distinct ones).

The product of its (nonzero) digits is 136080, while the sum is 45.

The square root of 99175680 is about 9958.6987101729. The cubic root of 99175680 is about 462.8799779707.

The spelling of 99175680 in words is "ninety-nine million, one hundred seventy-five thousand, six hundred eighty".