680889311 has 2 divisors, whose sum is σ = 680889312. Its totient is φ = 680889310.

The previous prime is 680889277. The next prime is 680889317. The reversal of 680889311 is 113988086.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 680889311 - 2²² = 676695007 is a prime.

It is a super-2 number, since 2×680889311² = 927220507668109442, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (680889317) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 340444655 + 340444656.

It is an arithmetic number, because the mean of its divisors is an integer number (340444656).

Almost surely, 2^680889311 is an apocalyptic number.

680889311 is a deficient number, since it is larger than the sum of its proper divisors (1).

680889311 is an equidigital number, since it uses as much as digits as its factorization.

680889311 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 82944, while the sum is 44.

The square root of 680889311 is about 26093.8558093663. The cubic root of 680889311 is about 879.7491153779.

The spelling of 680889311 in words is "six hundred eighty million, eight hundred eighty-nine thousand, three hundred eleven".