9965775699 has 24 divisors (see below), whose sum is σ = 15707265600. Its totient is φ = 6038472240.

The previous prime is 9965775689. The next prime is 9965775791.

9965775699 is a `hidden beast` number, since 9 + 9 + 6 + 57 + 7 + 569 + 9 = 666.

9965775699 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 9965775699 - 2⁵ = 9965775667 is a prime.

It is not an unprimeable number, because it can be changed into a prime (9965775689) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 563412 + ... + 580830.

It is an arithmetic number, because the mean of its divisors is an integer number (654469400).

Almost surely, 2^9965775699 is an apocalyptic number.

9965775699 is a gapful number since it is divisible by the number (99) formed by its first and last digit.

9965775699 is a deficient number, since it is larger than the sum of its proper divisors (5741489901).

9965775699 is a wasteful number, since it uses less digits than its factorization.

9965775699 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23215 (or 23212 counting only the distinct ones).

The product of its digits is 289340100, while the sum is 72.

The square root of 9965775699 is about 99828.7318310716. The cubic root of 9965775699 is about 2151.9740800943.

The spelling of 9965775699 in words is "nine billion, nine hundred sixty-five million, seven hundred seventy-five thousand, six hundred ninety-nine".