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68261 is a prime number
BaseRepresentation
bin10000101010100101
310110122012
4100222211
54141021
61244005
7403004
oct205245
9113565
1068261
1147316
1233605
13250bb
141ac3b
151535b
hex10aa5

68261 has 2 divisors, whose sum is σ = 68262. Its totient is φ = 68260.

The previous prime is 68239. The next prime is 68279. The reversal of 68261 is 16286.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 37636 + 30625 = 194^2 + 175^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-68261 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (68281) 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 as a sum of consecutive naturals, namely, 34130 + 34131.

It is an arithmetic number, because the mean of its divisors is an integer number (34131).

268261 is an apocalyptic number.

It is an amenable number.

68261 is a deficient number, since it is larger than the sum of its proper divisors (1).

68261 is an equidigital number, since it uses as much as digits as its factorization.

68261 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 576, while the sum is 23.

The square root of 68261 is about 261.2680615766. The cubic root of 68261 is about 40.8687055245.

The spelling of 68261 in words is "sixty-eight thousand, two hundred sixty-one".