67936261 has 2 divisors, whose sum is σ = 67936262. Its totient is φ = 67936260.

The previous prime is 67936171. The next prime is 67936277. The reversal of 67936261 is 16263976.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 48302500 + 19633761 = 6950^2 + 4431^2 .

It is a cyclic number.

It is not a de Polignac number, because 67936261 - 2¹¹ = 67934213 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (67936361) 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, 33968130 + 33968131.

It is an arithmetic number, because the mean of its divisors is an integer number (33968131).

Almost surely, 2^67936261 is an apocalyptic number.

It is an amenable number.

67936261 is a deficient number, since it is larger than the sum of its proper divisors (1).

67936261 is an equidigital number, since it uses as much as digits as its factorization.

67936261 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 81648, while the sum is 40.

The square root of 67936261 is about 8242.3456006164. The cubic root of 67936261 is about 408.0379406118.

The spelling of 67936261 in words is "sixty-seven million, nine hundred thirty-six thousand, two hundred sixty-one".