68334993 has 6 divisors (see below), whose sum is σ = 98706114. Its totient is φ = 45556656.

The previous prime is 68334977. The next prime is 68334997. The reversal of 68334993 is 39943386.

It can be written as a sum of positive squares in only one way, i.e., 49956624 + 18378369 = 7068^2 + 4287^2 .

It is not a de Polignac number, because 68334993 - 2⁴ = 68334977 is a prime.

It is not an unprimeable number, because it can be changed into a prime (68334997) 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 5 ways as a sum of consecutive naturals, for example, 3796380 + ... + 3796397.

It is an arithmetic number, because the mean of its divisors is an integer number (16451019).

Almost surely, 2^68334993 is an apocalyptic number.

It is an amenable number.

68334993 is a deficient number, since it is larger than the sum of its proper divisors (30371121).

68334993 is a wasteful number, since it uses less digits than its factorization.

68334993 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7592783 (or 7592780 counting only the distinct ones).

The product of its digits is 419904, while the sum is 45.

The square root of 68334993 is about 8266.4982308109. The cubic root of 68334993 is about 408.8346703368.

The spelling of 68334993 in words is "sixty-eight million, three hundred thirty-four thousand, nine hundred ninety-three".