68187841 has 2 divisors, whose sum is σ = 68187842. Its totient is φ = 68187840.

The previous prime is 68187773. The next prime is 68187859. The reversal of 68187841 is 14878186.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 46991025 + 21196816 = 6855^2 + 4604^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-68187841 is a prime.

It is not a weakly prime, because it can be changed into another prime (68187871) by changing a digit.

It is a good prime.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34093920 + 34093921.

It is an arithmetic number, because the mean of its divisors is an integer number (34093921).

Almost surely, 2^68187841 is an apocalyptic number.

It is an amenable number.

68187841 is a deficient number, since it is larger than the sum of its proper divisors (1).

68187841 is an equidigital number, since it uses as much as digits as its factorization.

68187841 is an evil number, because the sum of its binary digits is even.

The product of its digits is 86016, while the sum is 43.

The square root of 68187841 is about 8257.5929301462. The cubic root of 68187841 is about 408.5409990576.

The spelling of 68187841 in words is "sixty-eight million, one hundred eighty-seven thousand, eight hundred forty-one".