78536798 has 4 divisors (see below), whose sum is σ = 117805200. Its totient is φ = 39268398.

The previous prime is 78536767. The next prime is 78536803. The reversal of 78536798 is 89763587.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 19634198 + ... + 19634201.

It is an arithmetic number, because the mean of its divisors is an integer number (29451300).

Almost surely, 2^78536798 is an apocalyptic number.

78536798 is a deficient number, since it is larger than the sum of its proper divisors (39268402).

78536798 is a wasteful number, since it uses less digits than its factorization.

78536798 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39268401.

The product of its digits is 2540160, while the sum is 53.

The square root of 78536798 is about 8862.0989613071. The cubic root of 78536798 is about 428.2437798046.

The spelling of 78536798 in words is "seventy-eight million, five hundred thirty-six thousand, seven hundred ninety-eight".