127755691 has 12 divisors (see below), whose sum is σ = 148811040. Its totient is φ = 109359600.

The previous prime is 127755659. The next prime is 127755707. The reversal of 127755691 is 196557721.

It is not a de Polignac number, because 127755691 - 2⁵ = 127755659 is a prime.

It is not an unprimeable number, because it can be changed into a prime (127755491) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 53166 + ... + 55516.

It is an arithmetic number, because the mean of its divisors is an integer number (12400920).

Almost surely, 2^127755691 is an apocalyptic number.

127755691 is a deficient number, since it is larger than the sum of its proper divisors (21055349).

127755691 is a wasteful number, since it uses less digits than its factorization.

127755691 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3474 (or 3467 counting only the distinct ones).

The product of its digits is 132300, while the sum is 43.

The square root of 127755691 is about 11302.9063076715. The cubic root of 127755691 is about 503.6475802756.

The spelling of 127755691 in words is "one hundred twenty-seven million, seven hundred fifty-five thousand, six hundred ninety-one".