68134993 has 8 divisors (see below), whose sum is σ = 73391616. Its totient is φ = 63069600.

The previous prime is 68134981. The next prime is 68134999. The reversal of 68134993 is 39943186.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 68134993 - 2⁵ = 68134961 is a prime.

It is a super-2 number, since 2×68134993² = 9284754542220098, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (68134999) 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 7 ways as a sum of consecutive naturals, for example, 47068 + ... + 48493.

It is an arithmetic number, because the mean of its divisors is an integer number (9173952).

Almost surely, 2^68134993 is an apocalyptic number.

It is an amenable number.

68134993 is a deficient number, since it is larger than the sum of its proper divisors (5256623).

68134993 is a wasteful number, since it uses less digits than its factorization.

68134993 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 95615.

The product of its digits is 139968, while the sum is 43.

The square root of 68134993 is about 8254.3923458968. The cubic root of 68134993 is about 408.4354271813.

The spelling of 68134993 in words is "sixty-eight million, one hundred thirty-four thousand, nine hundred ninety-three".