127673881 has 2 divisors, whose sum is σ = 127673882. Its totient is φ = 127673880.

The previous prime is 127673879. The next prime is 127673933. The reversal of 127673881 is 188376721.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 64947481 + 62726400 = 8059^2 + 7920^2 .

It is a cyclic number.

It is not a de Polignac number, because 127673881 - 2¹ = 127673879 is a prime.

It is a super-2 number, since 2×127673881² = 32601239779204322, which contains 22 as substring.

Together with 127673879, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (127673681) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 63836940 + 63836941.

It is an arithmetic number, because the mean of its divisors is an integer number (63836941).

Almost surely, 2^127673881 is an apocalyptic number.

It is an amenable number.

127673881 is a deficient number, since it is larger than the sum of its proper divisors (1).

127673881 is an equidigital number, since it uses as much as digits as its factorization.

127673881 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 112896, while the sum is 43.

The square root of 127673881 is about 11299.2867474014. The cubic root of 127673881 is about 503.5400515845.

It can be divided in two parts, 1276 and 73881, that added together give a palindrome (75157).

The spelling of 127673881 in words is "one hundred twenty-seven million, six hundred seventy-three thousand, eight hundred eighty-one".