677845164629 has 2 divisors, whose sum is σ = 677845164630. Its totient is φ = 677845164628.

The previous prime is 677845164599. The next prime is 677845164649. The reversal of 677845164629 is 926461548776.

677845164629 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 658163880529 + 19681284100 = 811273^2 + 140290^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-677845164629 is a prime.

It is a super-2 number, since 2×677845164629² (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 (677845164649) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 338922582314 + 338922582315.

It is an arithmetic number, because the mean of its divisors is an integer number (338922582315).

Almost surely, 2^677845164629 is an apocalyptic number.

It is an amenable number.

677845164629 is a deficient number, since it is larger than the sum of its proper divisors (1).

677845164629 is an equidigital number, since it uses as much as digits as its factorization.

677845164629 is an evil number, because the sum of its binary digits is even.

The product of its digits is 121927680, while the sum is 65.

The spelling of 677845164629 in words is "six hundred seventy-seven billion, eight hundred forty-five million, one hundred sixty-four thousand, six hundred twenty-nine".