676405447 has 2 divisors, whose sum is σ = 676405448. Its totient is φ = 676405446.

The previous prime is 676405439. The next prime is 676405463. The reversal of 676405447 is 744504676.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 676405447 - 2³ = 676405439 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (676405487) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 338202723 + 338202724.

It is an arithmetic number, because the mean of its divisors is an integer number (338202724).

Almost surely, 2^676405447 is an apocalyptic number.

676405447 is a deficient number, since it is larger than the sum of its proper divisors (1).

676405447 is an equidigital number, since it uses as much as digits as its factorization.

676405447 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 564480, while the sum is 43.

The square root of 676405447 is about 26007.7958889253. The cubic root of 676405447 is about 877.8137219123.

The spelling of 676405447 in words is "six hundred seventy-six million, four hundred five thousand, four hundred forty-seven".