680900449 has 2 divisors, whose sum is σ = 680900450. Its totient is φ = 680900448.

The previous prime is 680900413. The next prime is 680900453. The reversal of 680900449 is 944009086.

680900449 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 can be written as a sum of positive squares in only one way, i.e., 565488400 + 115412049 = 23780^2 + 10743^2 .

It is a cyclic number.

It is not a de Polignac number, because 680900449 - 2¹⁹ = 680376161 is a prime.

It is not a weakly prime, because it can be changed into another prime (680900459) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 340450224 + 340450225.

It is an arithmetic number, because the mean of its divisors is an integer number (340450225).

Almost surely, 2^680900449 is an apocalyptic number.

It is an amenable number.

680900449 is a deficient number, since it is larger than the sum of its proper divisors (1).

680900449 is an equidigital number, since it uses as much as digits as its factorization.

680900449 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 62208, while the sum is 40.

The square root of 680900449 is about 26094.0692303826. The cubic root of 680900449 is about 879.7539123359.

The spelling of 680900449 in words is "six hundred eighty million, nine hundred thousand, four hundred forty-nine".