68998 has 4 divisors (see below), whose sum is σ = 103500. Its totient is φ = 34498.

The previous prime is 68993. The next prime is 69001. The reversal of 68998 is 89986.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a plaindrome in base 15.

It is a self number, because there is not a number n which added to its sum of digits gives 68998.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68993) by changing a digit.

68998 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 17248 + ... + 17251.

It is an arithmetic number, because the mean of its divisors is an integer number (25875).

2⁶⁸⁹⁹⁸ is an apocalyptic number.

68998 is a deficient number, since it is larger than the sum of its proper divisors (34502).

68998 is a wasteful number, since it uses less digits than its factorization.

68998 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34501.

The product of its digits is 31104, while the sum is 40.

The square root of 68998 is about 262.6747037687. The cubic root of 68998 is about 41.0152630066.

It can be divided in two parts, 689 and 98, that added together give a palindrome (787).

The spelling of 68998 in words is "sixty-eight thousand, nine hundred ninety-eight".