127771648 has 22 divisors (see below), whose sum is σ = 255420566. Its totient is φ = 63885312.

The previous prime is 127771583. The next prime is 127771649. The reversal of 127771648 is 846177721.

It can be written as a sum of positive squares in only one way, i.e., 115605504 + 12166144 = 10752^2 + 3488^2 .

It is not an unprimeable number, because it can be changed into a prime (127771649) 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, 61365 + ... + 63412.

Almost surely, 2^127771648 is an apocalyptic number.

It is an amenable number.

127771648 is a deficient number, since it is larger than the sum of its proper divisors (127648918).

127771648 is an equidigital number, since it uses as much as digits as its factorization.

127771648 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 124797 (or 124779 counting only the distinct ones).

The product of its digits is 131712, while the sum is 43.

The square root of 127771648 is about 11303.6121660291. The cubic root of 127771648 is about 503.6685483431.

The spelling of 127771648 in words is "one hundred twenty-seven million, seven hundred seventy-one thousand, six hundred forty-eight".