68172727 has 8 divisors (see below), whose sum is σ = 78167936. Its totient is φ = 58241592.

The previous prime is 68172721. The next prime is 68172733. The reversal of 68172727 is 72727186.

It is an interprime number because it is at equal distance from previous prime (68172721) and next prime (68172733).

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-68172727 is a prime.

It is a plaindrome in base 13.

It is a self number, because there is not a number n which added to its sum of digits gives 68172727.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68172721) 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 7 ways as a sum of consecutive naturals, for example, 13713 + ... + 18010.

It is an arithmetic number, because the mean of its divisors is an integer number (9770992).

Almost surely, 2^68172727 is an apocalyptic number.

68172727 is a deficient number, since it is larger than the sum of its proper divisors (9995209).

68172727 is a wasteful number, since it uses less digits than its factorization.

68172727 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32037.

The product of its digits is 65856, while the sum is 40.

The square root of 68172727 is about 8256.6777216990. The cubic root of 68172727 is about 408.5108121267.

The spelling of 68172727 in words is "sixty-eight million, one hundred seventy-two thousand, seven hundred twenty-seven".