68047998 has 8 divisors (see below), whose sum is σ = 136096008. Its totient is φ = 22682664.

The previous prime is 68047951. The next prime is 68048009. The reversal of 68047998 is 89974086.

It is a happy number.

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

68047998 is an admirable number.

It is a self number, because there is not a number n which added to its sum of digits gives 68047998.

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 in 3 ways as a sum of consecutive naturals, for example, 5670661 + ... + 5670672.

It is an arithmetic number, because the mean of its divisors is an integer number (17012001).

Almost surely, 2^68047998 is an apocalyptic number.

68047998 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.

68047998 is a wasteful number, since it uses less digits than its factorization.

68047998 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11341338.

The product of its (nonzero) digits is 870912, while the sum is 51.

The square root of 68047998 is about 8249.1210440871. The cubic root of 68047998 is about 408.2615225470.

The spelling of 68047998 in words is "sixty-eight million, forty-seven thousand, nine hundred ninety-eight".