67064717 has 2 divisors, whose sum is σ = 67064718. Its totient is φ = 67064716.

The previous prime is 67064693. The next prime is 67064731. The reversal of 67064717 is 71746076.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 63266116 + 3798601 = 7954^2 + 1949^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-67064717 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (67060717) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33532358 + 33532359.

It is an arithmetic number, because the mean of its divisors is an integer number (33532359).

Almost surely, 2^67064717 is an apocalyptic number.

It is an amenable number.

67064717 is a deficient number, since it is larger than the sum of its proper divisors (1).

67064717 is an equidigital number, since it uses as much as digits as its factorization.

67064717 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 49392, while the sum is 38.

The square root of 67064717 is about 8189.3050376696. The cubic root of 67064717 is about 406.2855397074.

The spelling of 67064717 in words is "sixty-seven million, sixty-four thousand, seven hundred seventeen".