127672757 has 2 divisors, whose sum is σ = 127672758. Its totient is φ = 127672756.

The previous prime is 127672739. The next prime is 127672759. The reversal of 127672757 is 757276721.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 123854641 + 3818116 = 11129^2 + 1954^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-127672757 is a prime.

Together with 127672759, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (127672759) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 63836378 + 63836379.

It is an arithmetic number, because the mean of its divisors is an integer number (63836379).

Almost surely, 2^127672757 is an apocalyptic number.

It is an amenable number.

127672757 is a deficient number, since it is larger than the sum of its proper divisors (1).

127672757 is an equidigital number, since it uses as much as digits as its factorization.

127672757 is an evil number, because the sum of its binary digits is even.

The product of its digits is 288120, while the sum is 44.

The square root of 127672757 is about 11299.2370096392. The cubic root of 127672757 is about 503.5385739116.

The spelling of 127672757 in words is "one hundred twenty-seven million, six hundred seventy-two thousand, seven hundred fifty-seven".