68368057 has 2 divisors, whose sum is σ = 68368058. Its totient is φ = 68368056.

The previous prime is 68368049. The next prime is 68368093. The reversal of 68368057 is 75086386.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 64818601 + 3549456 = 8051^2 + 1884^2 .

It is a cyclic number.

It is not a de Polignac number, because 68368057 - 2³ = 68368049 is a prime.

It is not a weakly prime, because it can be changed into another prime (68368757) 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 as a sum of consecutive naturals, namely, 34184028 + 34184029.

It is an arithmetic number, because the mean of its divisors is an integer number (34184029).

Almost surely, 2^68368057 is an apocalyptic number.

It is an amenable number.

68368057 is a deficient number, since it is larger than the sum of its proper divisors (1).

68368057 is an equidigital number, since it uses as much as digits as its factorization.

68368057 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 241920, while the sum is 43.

The square root of 68368057 is about 8268.4978684160. The cubic root of 68368057 is about 408.9005981499.

The spelling of 68368057 in words is "sixty-eight million, three hundred sixty-eight thousand, fifty-seven".