676643677 has 2 divisors, whose sum is σ = 676643678. Its totient is φ = 676643676.

The previous prime is 676643651. The next prime is 676643699. The reversal of 676643677 is 776346676.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 670758201 + 5885476 = 25899^2 + 2426^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-676643677 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (676643777) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 338321838 + 338321839.

It is an arithmetic number, because the mean of its divisors is an integer number (338321839).

Almost surely, 2^676643677 is an apocalyptic number.

It is an amenable number.

676643677 is a deficient number, since it is larger than the sum of its proper divisors (1).

676643677 is an equidigital number, since it uses as much as digits as its factorization.

676643677 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5334336, while the sum is 52.

The square root of 676643677 is about 26012.3754586158. The cubic root of 676643677 is about 877.9167651476.

The spelling of 676643677 in words is "six hundred seventy-six million, six hundred forty-three thousand, six hundred seventy-seven".