99768519 has 12 divisors (see below), whose sum is σ = 144210456. Its totient is φ = 66466032.

The previous prime is 99768517. The next prime is 99768521. The reversal of 99768519 is 91586799.

It is an interprime number because it is at equal distance from previous prime (99768517) and next prime (99768521).

It is not a de Polignac number, because 99768519 - 2¹ = 99768517 is a prime.

It is a super-2 number, since 2×99768519² = 19907514766906722, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (99768511) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 14257 + ... + 20069.

It is an arithmetic number, because the mean of its divisors is an integer number (12017538).

Almost surely, 2^99768519 is an apocalyptic number.

99768519 is a deficient number, since it is larger than the sum of its proper divisors (44441937).

99768519 is a wasteful number, since it uses less digits than its factorization.

99768519 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7726 (or 7723 counting only the distinct ones).

The product of its digits is 1224720, while the sum is 54.

The square root of 99768519 is about 9988.4192443049. The cubic root of 99768519 is about 463.8004601167.

The spelling of 99768519 in words is "ninety-nine million, seven hundred sixty-eight thousand, five hundred nineteen".