127655864 has 16 divisors (see below), whose sum is σ = 273548400. Its totient is φ = 54709632.

The previous prime is 127655779. The next prime is 127655887. The reversal of 127655864 is 468556721.

It is a super-2 number, since 2×127655864² = 32592039227172992, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1139729 + ... + 1139840.

It is an arithmetic number, because the mean of its divisors is an integer number (17096775).

Almost surely, 2^127655864 is an apocalyptic number.

127655864 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

127655864 is an abundant number, since it is smaller than the sum of its proper divisors (145892536).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

127655864 is a wasteful number, since it uses less digits than its factorization.

127655864 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2279582 (or 2279578 counting only the distinct ones).

The product of its digits is 403200, while the sum is 44.

The square root of 127655864 is about 11298.4894565601. The cubic root of 127655864 is about 503.5163643907.

The spelling of 127655864 in words is "one hundred twenty-seven million, six hundred fifty-five thousand, eight hundred sixty-four".