127697369 has 2 divisors, whose sum is σ = 127697370. Its totient is φ = 127697368.

The previous prime is 127697351. The next prime is 127697371. The reversal of 127697369 is 963796721.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 84400969 + 43296400 = 9187^2 + 6580^2 .

It is a cyclic number.

It is not a de Polignac number, because 127697369 - 2²⁴ = 110920153 is a prime.

It is a super-2 number, since 2×127697369² = 32613236099044322, which contains 22 as substring.

Together with 127697371, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (127697399) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 63848684 + 63848685.

It is an arithmetic number, because the mean of its divisors is an integer number (63848685).

Almost surely, 2^127697369 is an apocalyptic number.

It is an amenable number.

127697369 is a deficient number, since it is larger than the sum of its proper divisors (1).

127697369 is an equidigital number, since it uses as much as digits as its factorization.

127697369 is an evil number, because the sum of its binary digits is even.

The product of its digits is 857304, while the sum is 50.

The square root of 127697369 is about 11300.3260572428. The cubic root of 127697369 is about 503.5709282301.

The spelling of 127697369 in words is "one hundred twenty-seven million, six hundred ninety-seven thousand, three hundred sixty-nine".