676812397 has 2 divisors, whose sum is σ = 676812398. Its totient is φ = 676812396.

The previous prime is 676812373. The next prime is 676812403. The reversal of 676812397 is 793218676.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 597851401 + 78960996 = 24451^2 + 8886^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-676812397 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 676812397.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (676812317) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 338406198 + 338406199.

It is an arithmetic number, because the mean of its divisors is an integer number (338406199).

Almost surely, 2^676812397 is an apocalyptic number.

It is an amenable number.

676812397 is a deficient number, since it is larger than the sum of its proper divisors (1).

676812397 is an equidigital number, since it uses as much as digits as its factorization.

676812397 is an evil number, because the sum of its binary digits is even.

The product of its digits is 762048, while the sum is 49.

The square root of 676812397 is about 26015.6183282274. The cubic root of 676812397 is about 877.9897281226.

The spelling of 676812397 in words is "six hundred seventy-six million, eight hundred twelve thousand, three hundred ninety-seven".