127665855 has 16 divisors (see below), whose sum is σ = 226961760. Its totient is φ = 68088384.

The previous prime is 127665823. The next prime is 127665899. The reversal of 127665855 is 558566721.

127665855 is a `hidden beast` number, since 1 + 2 + 7 + 66 + 585 + 5 = 666.

It is not a de Polignac number, because 127665855 - 2⁵ = 127665823 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 127665855.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 472702 + ... + 472971.

It is an arithmetic number, because the mean of its divisors is an integer number (14185110).

Almost surely, 2^127665855 is an apocalyptic number.

127665855 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

127665855 is a deficient number, since it is larger than the sum of its proper divisors (99295905).

127665855 is an equidigital number, since it uses as much as digits as its factorization.

127665855 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 945687 (or 945681 counting only the distinct ones).

The product of its digits is 504000, while the sum is 45.

The square root of 127665855 is about 11298.9315866590. The cubic root of 127665855 is about 503.5294999689.

The spelling of 127665855 in words is "one hundred twenty-seven million, six hundred sixty-five thousand, eight hundred fifty-five".