676306537217 has 2 divisors, whose sum is σ = 676306537218. Its totient is φ = 676306537216.

The previous prime is 676306537147. The next prime is 676306537289. The reversal of 676306537217 is 712735603676.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 634123949761 + 42182587456 = 796319^2 + 205384^2 .

It is a cyclic number.

It is not a de Polignac number, because 676306537217 - 2¹⁰ = 676306536193 is a prime.

It is a super-2 number, since 2×676306537217² (a number of 24 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (676306537717) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 338153268608 + 338153268609.

It is an arithmetic number, because the mean of its divisors is an integer number (338153268609).

Almost surely, 2^676306537217 is an apocalyptic number.

It is an amenable number.

676306537217 is a deficient number, since it is larger than the sum of its proper divisors (1).

676306537217 is an equidigital number, since it uses as much as digits as its factorization.

676306537217 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6667920, while the sum is 53.

The spelling of 676306537217 in words is "six hundred seventy-six billion, three hundred six million, five hundred thirty-seven thousand, two hundred seventeen".