127864977 has 16 divisors (see below), whose sum is σ = 174674880. Its totient is φ = 83171072.

The previous prime is 127864943. The next prime is 127864993. The reversal of 127864977 is 779468721.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-127864977 is a prime.

It is not an unprimeable number, because it can be changed into a prime (127865977) 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 15 ways as a sum of consecutive naturals, for example, 21613 + ... + 26885.

It is an arithmetic number, because the mean of its divisors is an integer number (10917180).

Almost surely, 2^127864977 is an apocalyptic number.

It is an amenable number.

127864977 is a deficient number, since it is larger than the sum of its proper divisors (46809903).

127864977 is a wasteful number, since it uses less digits than its factorization.

127864977 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5472.

The product of its digits is 1185408, while the sum is 51.

The square root of 127864977 is about 11307.7396945632. The cubic root of 127864977 is about 503.7911510284.

The spelling of 127864977 in words is "one hundred twenty-seven million, eight hundred sixty-four thousand, nine hundred seventy-seven".