99001765 has 4 divisors (see below), whose sum is σ = 118802124. Its totient is φ = 79201408.

The previous prime is 99001753. The next prime is 99001783. The reversal of 99001765 is 56710099.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 56710099 = 1879 ⋅30181.

It can be written as a sum of positive squares in 2 ways, for example, as 11410884 + 87590881 = 3378^2 + 9359^2 .

It is a cyclic number.

It is not a de Polignac number, because 99001765 - 2¹⁵ = 98968997 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9900172 + ... + 9900181.

It is an arithmetic number, because the mean of its divisors is an integer number (29700531).

Almost surely, 2^99001765 is an apocalyptic number.

It is an amenable number.

99001765 is a deficient number, since it is larger than the sum of its proper divisors (19800359).

99001765 is a wasteful number, since it uses less digits than its factorization.

99001765 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19800358.

The product of its (nonzero) digits is 17010, while the sum is 37.

The square root of 99001765 is about 9949.9630652581. The cubic root of 99001765 is about 462.6092500618.

The spelling of 99001765 in words is "ninety-nine million, one thousand, seven hundred sixty-five".