676254196781 has 2 divisors, whose sum is σ = 676254196782. Its totient is φ = 676254196780.

The previous prime is 676254196777. The next prime is 676254196817. The reversal of 676254196781 is 187691452676.

676254196781 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

Together with next prime (676254196817) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 543655528900 + 132598667881 = 737330^2 + 364141^2 .

It is a cyclic number.

It is not a de Polignac number, because 676254196781 - 2² = 676254196777 is a prime.

It is a super-2 number, since 2×676254196781² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (676254196711) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 338127098390 + 338127098391.

It is an arithmetic number, because the mean of its divisors is an integer number (338127098391).

Almost surely, 2^676254196781 is an apocalyptic number.

It is an amenable number.

676254196781 is a deficient number, since it is larger than the sum of its proper divisors (1).

676254196781 is an equidigital number, since it uses as much as digits as its factorization.

676254196781 is an evil number, because the sum of its binary digits is even.

The product of its digits is 30481920, while the sum is 62.

The spelling of 676254196781 in words is "six hundred seventy-six billion, two hundred fifty-four million, one hundred ninety-six thousand, seven hundred eighty-one".