78768899 has 8 divisors (see below), whose sum is σ = 85996080. Its totient is φ = 71552800.

The previous prime is 78768887. The next prime is 78768917. The reversal of 78768899 is 99886787.

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

It is not a de Polignac number, because 78768899 - 2⁴ = 78768883 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (78768869) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21029 + ... + 24489.

It is an arithmetic number, because the mean of its divisors is an integer number (10749510).

Almost surely, 2^78768899 is an apocalyptic number.

78768899 is a deficient number, since it is larger than the sum of its proper divisors (7227181).

78768899 is a wasteful number, since it uses less digits than its factorization.

78768899 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5541.

The product of its digits is 12192768, while the sum is 62.

The square root of 78768899 is about 8875.1844487875. The cubic root of 78768899 is about 428.6652300343.

It can be divided in two parts, 787688 and 99, that added together give a palindrome (787787).

The spelling of 78768899 in words is "seventy-eight million, seven hundred sixty-eight thousand, eight hundred ninety-nine".