127764769 has 8 divisors (see below), whose sum is σ = 140384160. Its totient is φ = 115312800.

The previous prime is 127764731. The next prime is 127764781. The reversal of 127764769 is 967467721.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 127764769 - 2⁹ = 127764257 is a prime.

It is a super-2 number, since 2×127764769² = 32647672395246722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (127764269) 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 in 7 ways as a sum of consecutive naturals, for example, 40252 + ... + 43309.

It is an arithmetic number, because the mean of its divisors is an integer number (17548020).

Almost surely, 2^127764769 is an apocalyptic number.

It is an amenable number.

127764769 is a deficient number, since it is larger than the sum of its proper divisors (12619391).

127764769 is a wasteful number, since it uses less digits than its factorization.

127764769 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 83711.

The product of its digits is 889056, while the sum is 49.

The square root of 127764769 is about 11303.3078786699. The cubic root of 127764769 is about 503.6595093057.

The spelling of 127764769 in words is "one hundred twenty-seven million, seven hundred sixty-four thousand, seven hundred sixty-nine".