127664767 has 2 divisors, whose sum is σ = 127664768. Its totient is φ = 127664766.

The previous prime is 127664759. The next prime is 127664773. The reversal of 127664767 is 767466721.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 127664767 - 2³ = 127664759 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (127664777) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 63832383 + 63832384.

It is an arithmetic number, because the mean of its divisors is an integer number (63832384).

Almost surely, 2^127664767 is an apocalyptic number.

127664767 is a deficient number, since it is larger than the sum of its proper divisors (1).

127664767 is an equidigital number, since it uses as much as digits as its factorization.

127664767 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 592704, while the sum is 46.

The square root of 127664767 is about 11298.8834404113. The cubic root of 127664767 is about 503.5280695638.

The spelling of 127664767 in words is "one hundred twenty-seven million, six hundred sixty-four thousand, seven hundred sixty-seven".