68993943 has 4 divisors (see below), whose sum is σ = 91991928. Its totient is φ = 45995960.

The previous prime is 68993933. The next prime is 68993983. The reversal of 68993943 is 34939986.

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

It is a cyclic number.

It is not a de Polignac number, because 68993943 - 2²⁴ = 52216727 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68993933) 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 3 ways as a sum of consecutive naturals, for example, 11498988 + ... + 11498993.

It is an arithmetic number, because the mean of its divisors is an integer number (22997982).

Almost surely, 2^68993943 is an apocalyptic number.

68993943 is a deficient number, since it is larger than the sum of its proper divisors (22997985).

68993943 is a wasteful number, since it uses less digits than its factorization.

68993943 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22997984.

The product of its digits is 1259712, while the sum is 51.

The square root of 68993943 is about 8306.2592663605. The cubic root of 68993943 is about 410.1445910805.

The spelling of 68993943 in words is "sixty-eight million, nine hundred ninety-three thousand, nine hundred forty-three".