68999986 has 16 divisors (see below), whose sum is σ = 116552448. Its totient is φ = 30351600.

The previous prime is 68999981. The next prime is 69000047.

68999986 is nontrivially palindromic in base 10.

It is not an unprimeable number, because it can be changed into a prime (68999981) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 49905 + ... + 51268.

It is an arithmetic number, because the mean of its divisors is an integer number (7284528).

Almost surely, 2^68999986 is an apocalyptic number.

68999986 is a deficient number, since it is larger than the sum of its proper divisors (47552462).

68999986 is a wasteful number, since it uses less digits than its factorization.

68999986 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 101217.

The product of its digits is 15116544, while the sum is 64.

The square root of 68999986 is about 8306.6230202171. The cubic root of 68999986 is about 410.1565652302.

The spelling of 68999986 in words is "sixty-eight million, nine hundred ninety-nine thousand, nine hundred eighty-six".