68742293 has 4 divisors (see below), whose sum is σ = 69180300. Its totient is φ = 68304288.

The previous prime is 68742287. The next prime is 68742299. The reversal of 68742293 is 39224786.

It is a happy number.

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

It is an interprime number because it is at equal distance from previous prime (68742287) and next prime (68742299).

It can be written as a sum of positive squares in 2 ways, for example, as 25472209 + 43270084 = 5047^2 + 6578^2 .

It is a cyclic number.

It is not a de Polignac number, because 68742293 - 2¹⁰ = 68741269 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 68742293.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68742299) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 218768 + ... + 219081.

It is an arithmetic number, because the mean of its divisors is an integer number (17295075).

Almost surely, 2^68742293 is an apocalyptic number.

It is an amenable number.

68742293 is a deficient number, since it is larger than the sum of its proper divisors (438007).

68742293 is a wasteful number, since it uses less digits than its factorization.

68742293 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 438006.

The product of its digits is 145152, while the sum is 41.

The square root of 68742293 is about 8291.0972132764. The cubic root of 68742293 is about 409.6453268276.

The spelling of 68742293 in words is "sixty-eight million, seven hundred forty-two thousand, two hundred ninety-three".