78671598 has 8 divisors (see below), whose sum is σ = 157343208. Its totient is φ = 26223864.

The previous prime is 78671591. The next prime is 78671623. The reversal of 78671598 is 89517687.

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

78671598 is an admirable number.

It is a self number, because there is not a number n which added to its sum of digits gives 78671598.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78671591) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6555961 + ... + 6555972.

It is an arithmetic number, because the mean of its divisors is an integer number (19667901).

Almost surely, 2^78671598 is an apocalyptic number.

78671598 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

78671598 is a wasteful number, since it uses less digits than its factorization.

78671598 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13111938.

The product of its digits is 846720, while the sum is 51.

The square root of 78671598 is about 8869.7011223603. The cubic root of 78671598 is about 428.4886512827.

The spelling of 78671598 in words is "seventy-eight million, six hundred seventy-one thousand, five hundred ninety-eight".