68599993 has 32 divisors (see below), whose sum is σ = 91422720. Its totient is φ = 49896000.

The previous prime is 68599991. The next prime is 68599997. The reversal of 68599993 is 39999586.

It is not a de Polignac number, because 68599993 - 2¹ = 68599991 is a prime.

It is not an unprimeable number, because it can be changed into a prime (68599991) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 68728 + ... + 69718.

It is an arithmetic number, because the mean of its divisors is an integer number (2856960).

Almost surely, 2^68599993 is an apocalyptic number.

It is an amenable number.

68599993 is a deficient number, since it is larger than the sum of its proper divisors (22822727).

68599993 is a wasteful number, since it uses less digits than its factorization.

68599993 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1069.

The product of its digits is 4723920, while the sum is 58.

The square root of 68599993 is about 8282.5112737623. The cubic root of 68599993 is about 409.3624694259.

The spelling of 68599993 in words is "sixty-eight million, five hundred ninety-nine thousand, nine hundred ninety-three".