68643727 has 8 divisors (see below), whose sum is σ = 70955280. Its totient is φ = 66370560.

The previous prime is 68643691. The next prime is 68643737. The reversal of 68643727 is 72734686.

It is a happy number.

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 68643727 - 2¹¹ = 68641679 is a prime.

It is a super-2 number, since 2×68643727² = 9423922512901058, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68643737) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5938 + ... + 13135.

It is an arithmetic number, because the mean of its divisors is an integer number (8869410).

Almost surely, 2^68643727 is an apocalyptic number.

68643727 is a deficient number, since it is larger than the sum of its proper divisors (2311553).

68643727 is a wasteful number, since it uses less digits than its factorization.

68643727 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19193.

The product of its digits is 338688, while the sum is 43.

The square root of 68643727 is about 8285.1509943996. The cubic root of 68643727 is about 409.4494434632.

The spelling of 68643727 in words is "sixty-eight million, six hundred forty-three thousand, seven hundred twenty-seven".