127680663 has 8 divisors (see below), whose sum is σ = 185717376. Its totient is φ = 77382200.

The previous prime is 127680653. The next prime is 127680667. The reversal of 127680663 is 366086721.

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 127680663 - 2¹² = 127676567 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (127680667) 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, 1934523 + ... + 1934588.

It is an arithmetic number, because the mean of its divisors is an integer number (23214672).

Almost surely, 2^127680663 is an apocalyptic number.

127680663 is a deficient number, since it is larger than the sum of its proper divisors (58036713).

127680663 is a wasteful number, since it uses less digits than its factorization.

127680663 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3869125.

The product of its (nonzero) digits is 72576, while the sum is 39.

The square root of 127680663 is about 11299.5868508543. The cubic root of 127680663 is about 503.5489673944.

The spelling of 127680663 in words is "one hundred twenty-seven million, six hundred eighty thousand, six hundred sixty-three".