127768660 has 12 divisors (see below), whose sum is σ = 268314228. Its totient is φ = 51107456.

The previous prime is 127768633. The next prime is 127768681. The reversal of 127768660 is 66867721.

It can be written as a sum of positive squares in 2 ways, for example, as 100080016 + 27688644 = 10004^2 + 5262^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3194197 + ... + 3194236.

It is an arithmetic number, because the mean of its divisors is an integer number (22359519).

Almost surely, 2^127768660 is an apocalyptic number.

127768660 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

127768660 is an abundant number, since it is smaller than the sum of its proper divisors (140545568).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

127768660 is a wasteful number, since it uses less digits than its factorization.

127768660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6388442 (or 6388440 counting only the distinct ones).

The product of its (nonzero) digits is 169344, while the sum is 43.

The square root of 127768660 is about 11303.4799951165. The cubic root of 127768660 is about 503.6646221373.

The spelling of 127768660 in words is "one hundred twenty-seven million, seven hundred sixty-eight thousand, six hundred sixty".