127640680 has 16 divisors (see below), whose sum is σ = 287191620. Its totient is φ = 51056256.

The previous prime is 127640677. The next prime is 127640683. The reversal of 127640680 is 86046721.

It is an interprime number because it is at equal distance from previous prime (127640677) and next prime (127640683).

It can be written as a sum of positive squares in 2 ways, for example, as 120253156 + 7387524 = 10966^2 + 2718^2 .

It is not an unprimeable number, because it can be changed into a prime (127640683) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1595469 + ... + 1595548.

Almost surely, 2^127640680 is an apocalyptic number.

127640680 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

127640680 is an abundant number, since it is smaller than the sum of its proper divisors (159550940).

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

127640680 is a wasteful number, since it uses less digits than its factorization.

127640680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3191028 (or 3191024 counting only the distinct ones).

The product of its (nonzero) digits is 16128, while the sum is 34.

The square root of 127640680 is about 11297.8174883470. The cubic root of 127640680 is about 503.4964000496.

The spelling of 127640680 in words is "one hundred twenty-seven million, six hundred forty thousand, six hundred eighty".