67965761 has 2 divisors, whose sum is σ = 67965762. Its totient is φ = 67965760.

The previous prime is 67965749. The next prime is 67965787. The reversal of 67965761 is 16756976.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 47886400 + 20079361 = 6920^2 + 4481^2 .

It is a cyclic number.

It is not a de Polignac number, because 67965761 - 2¹⁰ = 67964737 is a prime.

It is not a weakly prime, because it can be changed into another prime (67965721) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33982880 + 33982881.

It is an arithmetic number, because the mean of its divisors is an integer number (33982881).

Almost surely, 2^67965761 is an apocalyptic number.

It is an amenable number.

67965761 is a deficient number, since it is larger than the sum of its proper divisors (1).

67965761 is an equidigital number, since it uses as much as digits as its factorization.

67965761 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 476280, while the sum is 47.

The square root of 67965761 is about 8244.1349455234. The cubic root of 67965761 is about 408.0969929117.

The spelling of 67965761 in words is "sixty-seven million, nine hundred sixty-five thousand, seven hundred sixty-one".