127486681 has 9 divisors (see below), whose sum is σ = 148392831. Its totient is φ = 109206552.

The previous prime is 127486661. The next prime is 127486687. The reversal of 127486681 is 186684721.

The square root of 127486681 is 11291.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 79655625 + 47831056 = 8925^2 + 6916^2 .

It is not a de Polignac number, because 127486681 - 2²⁵ = 93932249 is a prime.

It is a super-2 number, since 2×127486681² = 32505707664791522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (127486687) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 78231 + ... + 79843.

Almost surely, 2^127486681 is an apocalyptic number.

127486681 is the 11291-st square number.

127486681 is the 5646-th centered octagonal number.

It is an amenable number.

127486681 is a deficient number, since it is larger than the sum of its proper divisors (20906150).

127486681 is an frugal number, since it uses more digits than its factorization.

127486681 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3240 (or 1620 counting only the distinct ones).

The product of its digits is 129024, while the sum is 43.

The cubic root of 127486681 is about 503.2938284078.

The spelling of 127486681 in words is "one hundred twenty-seven million, four hundred eighty-six thousand, six hundred eighty-one".