127716563 has 16 divisors (see below), whose sum is σ = 149577120. Its totient is φ = 107951616.

The previous prime is 127716541. The next prime is 127716571. The reversal of 127716563 is 365617721.

It is a cyclic number.

It is not a de Polignac number, because 127716563 - 2⁸ = 127716307 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (127716503) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 368 + ... + 15986.

It is an arithmetic number, because the mean of its divisors is an integer number (9348570).

Almost surely, 2^127716563 is an apocalyptic number.

127716563 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

127716563 is a deficient number, since it is larger than the sum of its proper divisors (21860557).

127716563 is a wasteful number, since it uses less digits than its factorization.

127716563 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15686.

The product of its digits is 52920, while the sum is 38.

The square root of 127716563 is about 11301.1752928622. The cubic root of 127716563 is about 503.5961572964.

The spelling of 127716563 in words is "one hundred twenty-seven million, seven hundred sixteen thousand, five hundred sixty-three".