1680606727 has 2 divisors, whose sum is σ = 1680606728. Its totient is φ = 1680606726.

The previous prime is 1680606713. The next prime is 1680606743. The reversal of 1680606727 is 7276060861.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1680606727 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1680606787) 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, 840303363 + 840303364.

It is an arithmetic number, because the mean of its divisors is an integer number (840303364).

Almost surely, 2^1680606727 is an apocalyptic number.

1680606727 is a deficient number, since it is larger than the sum of its proper divisors (1).

1680606727 is an equidigital number, since it uses as much as digits as its factorization.

1680606727 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 169344, while the sum is 43.

The square root of 1680606727 is about 40995.2037072631. The cubic root of 1680606727 is about 1188.9274819765.

The spelling of 1680606727 in words is "one billion, six hundred eighty million, six hundred six thousand, seven hundred twenty-seven".