68243306 has 4 divisors (see below), whose sum is σ = 102364962. Its totient is φ = 34121652.

The previous prime is 68243303. The next prime is 68243309. The reversal of 68243306 is 60334286.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 60334286 = 2 ⋅30167143.

It is an interprime number because it is at equal distance from previous prime (68243303) and next prime (68243309).

It can be written as a sum of positive squares in only one way, i.e., 67387681 + 855625 = 8209^2 + 925^2 .

It is not an unprimeable number, because it can be changed into a prime (68243303) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 17060825 + ... + 17060828.

Almost surely, 2^68243306 is an apocalyptic number.

68243306 is a deficient number, since it is larger than the sum of its proper divisors (34121656).

68243306 is a wasteful number, since it uses less digits than its factorization.

68243306 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34121655.

The product of its (nonzero) digits is 20736, while the sum is 32.

The square root of 68243306 is about 8260.9506716842. The cubic root of 68243306 is about 408.6517401371.

The spelling of 68243306 in words is "sixty-eight million, two hundred forty-three thousand, three hundred six".