64760940217 has 2 divisors, whose sum is σ = 64760940218. Its totient is φ = 64760940216.

The previous prime is 64760940161. The next prime is 64760940239. The reversal of 64760940217 is 71204906746.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 50972544441 + 13788395776 = 225771^2 + 117424^2 .

It is a cyclic number.

It is not a de Polignac number, because 64760940217 - 2³⁵ = 30401201849 is a prime.

It is not a weakly prime, because it can be changed into another prime (64760140217) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32380470108 + 32380470109.

It is an arithmetic number, because the mean of its divisors is an integer number (32380470109).

Almost surely, 2^64760940217 is an apocalyptic number.

It is an amenable number.

64760940217 is a deficient number, since it is larger than the sum of its proper divisors (1).

64760940217 is an equidigital number, since it uses as much as digits as its factorization.

64760940217 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 508032, while the sum is 46.

The spelling of 64760940217 in words is "sixty-four billion, seven hundred sixty million, nine hundred forty thousand, two hundred seventeen".