680123447 has 2 divisors, whose sum is σ = 680123448. Its totient is φ = 680123446.

The previous prime is 680123393. The next prime is 680123461. The reversal of 680123447 is 744321086.

680123447 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 is a cyclic number.

It is not a de Polignac number, because 680123447 - 2¹² = 680119351 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (680129447) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 340061723 + 340061724.

It is an arithmetic number, because the mean of its divisors is an integer number (340061724).

Almost surely, 2^680123447 is an apocalyptic number.

680123447 is a deficient number, since it is larger than the sum of its proper divisors (1).

680123447 is an equidigital number, since it uses as much as digits as its factorization.

680123447 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 32256, while the sum is 35.

The square root of 680123447 is about 26079.1765015692. The cubic root of 680123447 is about 879.4191444896.

The spelling of 680123447 in words is "six hundred eighty million, one hundred twenty-three thousand, four hundred forty-seven".