68182657 has 4 divisors (see below), whose sum is σ = 69116740. Its totient is φ = 67248576.

The previous prime is 68182643. The next prime is 68182663. The reversal of 68182657 is 75628186.

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

It can be written as a sum of positive squares in 2 ways, for example, as 18395521 + 49787136 = 4289^2 + 7056^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-68182657 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (68182627) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 466932 + ... + 467077.

It is an arithmetic number, because the mean of its divisors is an integer number (17279185).

Almost surely, 2^68182657 is an apocalyptic number.

It is an amenable number.

68182657 is a deficient number, since it is larger than the sum of its proper divisors (934083).

68182657 is an equidigital number, since it uses as much as digits as its factorization.

68182657 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 934082.

The product of its digits is 161280, while the sum is 43.

The square root of 68182657 is about 8257.2790312548. The cubic root of 68182657 is about 408.5306456467.

It can be divided in two parts, 681 and 82657, that added together give a palindrome (83338).

The spelling of 68182657 in words is "sixty-eight million, one hundred eighty-two thousand, six hundred fifty-seven".