127680563 has 2 divisors, whose sum is σ = 127680564. Its totient is φ = 127680562.

The previous prime is 127680559. The next prime is 127680569. The reversal of 127680563 is 365086721.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 127680563 - 2² = 127680559 is a prime.

It is a Chen prime.

It is equal to p_7253849 and since 127680563 and 7253849 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (127680569) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 63840281 + 63840282.

It is an arithmetic number, because the mean of its divisors is an integer number (63840282).

Almost surely, 2^127680563 is an apocalyptic number.

127680563 is a deficient number, since it is larger than the sum of its proper divisors (1).

127680563 is an equidigital number, since it uses as much as digits as its factorization.

127680563 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 60480, while the sum is 38.

The square root of 127680563 is about 11299.5824259129. The cubic root of 127680563 is about 503.5488359339.

The spelling of 127680563 in words is "one hundred twenty-seven million, six hundred eighty thousand, five hundred sixty-three".