78998758 has 8 divisors (see below), whose sum is σ = 120506760. Its totient is φ = 38829840.

The previous prime is 78998747. The next prime is 78998771. The reversal of 78998758 is 85789987.

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

It is a junction number, because it is equal to n+sod(n) for n = 78998696 and 78998705.

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, 334623 + ... + 334858.

It is an arithmetic number, because the mean of its divisors is an integer number (15063345).

Almost surely, 2^78998758 is an apocalyptic number.

78998758 is a deficient number, since it is larger than the sum of its proper divisors (41508002).

78998758 is a wasteful number, since it uses less digits than its factorization.

78998758 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 669542.

The product of its digits is 10160640, while the sum is 61.

The square root of 78998758 is about 8888.1245490823. The cubic root of 78998758 is about 429.0817940732.

The spelling of 78998758 in words is "seventy-eight million, nine hundred ninety-eight thousand, seven hundred fifty-eight".