676403447 has 2 divisors, whose sum is σ = 676403448. Its totient is φ = 676403446.

The previous prime is 676403419. The next prime is 676403491. The reversal of 676403447 is 744304676.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 676403447 - 2¹⁸ = 676141303 is a prime.

It is a super-3 number, since 3×676403447³ (a number of 27 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (676403417) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 338201723 + 338201724.

It is an arithmetic number, because the mean of its divisors is an integer number (338201724).

Almost surely, 2^676403447 is an apocalyptic number.

676403447 is a deficient number, since it is larger than the sum of its proper divisors (1).

676403447 is an equidigital number, since it uses as much as digits as its factorization.

676403447 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 338688, while the sum is 41.

The square root of 676403447 is about 26007.7574388873. The cubic root of 676403447 is about 877.8128567363.

The spelling of 676403447 in words is "six hundred seventy-six million, four hundred three thousand, four hundred forty-seven".