680129447 has 2 divisors, whose sum is σ = 680129448. Its totient is φ = 680129446.

The previous prime is 680129441. The next prime is 680129459. The reversal of 680129447 is 744921086.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 680129447 - 2⁶ = 680129383 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (680129441) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 340064723 + 340064724.

It is an arithmetic number, because the mean of its divisors is an integer number (340064724).

Almost surely, 2^680129447 is an apocalyptic number.

680129447 is a deficient number, since it is larger than the sum of its proper divisors (1).

680129447 is an equidigital number, since it uses as much as digits as its factorization.

680129447 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 96768, while the sum is 41.

The square root of 680129447 is about 26079.2915356227. The cubic root of 680129447 is about 879.4217305394.

The spelling of 680129447 in words is "six hundred eighty million, one hundred twenty-nine thousand, four hundred forty-seven".