676212217 has 2 divisors, whose sum is σ = 676212218. Its totient is φ = 676212216.

The previous prime is 676212143. The next prime is 676212233. The reversal of 676212217 is 712212676.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 531948096 + 144264121 = 23064^2 + 12011^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-676212217 is a prime.

It is not a weakly prime, because it can be changed into another prime (676212617) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 338106108 + 338106109.

It is an arithmetic number, because the mean of its divisors is an integer number (338106109).

Almost surely, 2^676212217 is an apocalyptic number.

It is an amenable number.

676212217 is a deficient number, since it is larger than the sum of its proper divisors (1).

676212217 is an equidigital number, since it uses as much as digits as its factorization.

676212217 is an evil number, because the sum of its binary digits is even.

The product of its digits is 14112, while the sum is 34.

The square root of 676212217 is about 26004.0807759090. The cubic root of 676212217 is about 877.7301250594.

The spelling of 676212217 in words is "six hundred seventy-six million, two hundred twelve thousand, two hundred seventeen".