99898765 has 8 divisors (see below), whose sum is σ = 124012440. Its totient is φ = 77163072.

The previous prime is 99898763. The next prime is 99898769. The reversal of 99898765 is 56789899.

It can be written as a sum of positive squares in 4 ways, for example, as 6563844 + 93334921 = 2562^2 + 9661^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 99898765 - 2¹ = 99898763 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (99898763) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 344334 + ... + 344623.

It is an arithmetic number, because the mean of its divisors is an integer number (15501555).

Almost surely, 2^99898765 is an apocalyptic number.

It is an amenable number.

99898765 is a deficient number, since it is larger than the sum of its proper divisors (24113675).

99898765 is a wasteful number, since it uses less digits than its factorization.

99898765 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 688991.

The product of its digits is 9797760, while the sum is 61.

The square root of 99898765 is about 9994.9369682855. The cubic root of 99898765 is about 464.0022000614.

The spelling of 99898765 in words is "ninety-nine million, eight hundred ninety-eight thousand, seven hundred sixty-five".