127705667 has 2 divisors, whose sum is σ = 127705668. Its totient is φ = 127705666.

The previous prime is 127705661. The next prime is 127705687. The reversal of 127705667 is 766507721.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 127705667 - 2⁴ = 127705651 is a prime.

It is not a weakly prime, because it can be changed into another prime (127705661) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 63852833 + 63852834.

It is an arithmetic number, because the mean of its divisors is an integer number (63852834).

Almost surely, 2^127705667 is an apocalyptic number.

127705667 is a deficient number, since it is larger than the sum of its proper divisors (1).

127705667 is an equidigital number, since it uses as much as digits as its factorization.

127705667 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 123480, while the sum is 41.

The square root of 127705667 is about 11300.6932088257. The cubic root of 127705667 is about 503.5818356359.

The spelling of 127705667 in words is "one hundred twenty-seven million, seven hundred five thousand, six hundred sixty-seven".