78798998 has 8 divisors (see below), whose sum is σ = 119526840. Its totient is φ = 38956720.

The previous prime is 78798959. The next prime is 78799001. The reversal of 78798998 is 89989787.

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

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 221168 + ... + 221523.

It is an arithmetic number, because the mean of its divisors is an integer number (14940855).

Almost surely, 2^78798998 is an apocalyptic number.

78798998 is a deficient number, since it is larger than the sum of its proper divisors (40727842).

78798998 is a wasteful number, since it uses less digits than its factorization.

78798998 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 442782.

The product of its digits is 18289152, while the sum is 65.

The square root of 78798998 is about 8876.8799698993. The cubic root of 78798998 is about 428.7198232890.

The spelling of 78798998 in words is "seventy-eight million, seven hundred ninety-eight thousand, nine hundred ninety-eight".