68791998 has 32 divisors (see below), whose sum is σ = 150417792. Its totient is φ = 20800800.

The previous prime is 68791993. The next prime is 68791999. The reversal of 68791998 is 89919786.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68791993) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 41628 + ... + 43248.

It is an arithmetic number, because the mean of its divisors is an integer number (4700556).

Almost surely, 2^68791998 is an apocalyptic number.

68791998 is an abundant number, since it is smaller than the sum of its proper divisors (81625794).

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

68791998 is a wasteful number, since it uses less digits than its factorization.

68791998 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2280.

The product of its digits is 1959552, while the sum is 57.

The square root of 68791998 is about 8294.0941639217. The cubic root of 68791998 is about 409.7440361496.

The spelling of 68791998 in words is "sixty-eight million, seven hundred ninety-one thousand, nine hundred ninety-eight".