99671785 has 8 divisors (see below), whose sum is σ = 119661696. Its totient is φ = 79700400.

The previous prime is 99671783. The next prime is 99671797. The reversal of 99671785 is 58717699.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 99671785 - 2¹ = 99671783 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (99671783) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 14110 + ... + 19960.

It is an arithmetic number, because the mean of its divisors is an integer number (14957712).

Almost surely, 2^99671785 is an apocalyptic number.

It is an amenable number.

99671785 is a deficient number, since it is larger than the sum of its proper divisors (19989911).

99671785 is a wasteful number, since it uses less digits than its factorization.

99671785 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9263.

The product of its digits is 952560, while the sum is 52.

The square root of 99671785 is about 9983.5757622207. The cubic root of 99671785 is about 463.6505137468.

The spelling of 99671785 in words is "ninety-nine million, six hundred seventy-one thousand, seven hundred eighty-five".