127760681 has 2 divisors, whose sum is σ = 127760682. Its totient is φ = 127760680.

The previous prime is 127760669. The next prime is 127760701. The reversal of 127760681 is 186067721.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 80371225 + 47389456 = 8965^2 + 6884^2 .

It is a cyclic number.

It is not a de Polignac number, because 127760681 - 2¹⁰ = 127759657 is a prime.

It is a super-2 number, since 2×127760681² = 32645583219167522, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (127760621) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 63880340 + 63880341.

It is an arithmetic number, because the mean of its divisors is an integer number (63880341).

Almost surely, 2^127760681 is an apocalyptic number.

It is an amenable number.

127760681 is a deficient number, since it is larger than the sum of its proper divisors (1).

127760681 is an equidigital number, since it uses as much as digits as its factorization.

127760681 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 28224, while the sum is 38.

The square root of 127760681 is about 11303.1270452030. The cubic root of 127760681 is about 503.6541375013.

The spelling of 127760681 in words is "one hundred twenty-seven million, seven hundred sixty thousand, six hundred eighty-one".