78996878 has 8 divisors (see below), whose sum is σ = 119582760. Its totient is φ = 39135960.

The previous prime is 78996859. The next prime is 78996893. The reversal of 78996878 is 87869987.

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

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 78996878.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 180968 + ... + 181403.

It is an arithmetic number, because the mean of its divisors is an integer number (14947845).

Almost surely, 2^78996878 is an apocalyptic number.

78996878 is a deficient number, since it is larger than the sum of its proper divisors (40585882).

78996878 is a wasteful number, since it uses less digits than its factorization.

78996878 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 362482.

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

The square root of 78996878 is about 8888.0187893591. The cubic root of 78996878 is about 429.0783903059.

The spelling of 78996878 in words is "seventy-eight million, nine hundred ninety-six thousand, eight hundred seventy-eight".