127664855 has 4 divisors (see below), whose sum is σ = 153197832. Its totient is φ = 102131880.

The previous prime is 127664843. The next prime is 127664891. The reversal of 127664855 is 558466721.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 127664855 - 2⁶ = 127664791 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12766481 + ... + 12766490.

It is an arithmetic number, because the mean of its divisors is an integer number (38299458).

Almost surely, 2^127664855 is an apocalyptic number.

127664855 is a deficient number, since it is larger than the sum of its proper divisors (25532977).

127664855 is an equidigital number, since it uses as much as digits as its factorization.

127664855 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25532976.

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

The square root of 127664855 is about 11298.8873346007. The cubic root of 127664855 is about 503.5281852587.

The spelling of 127664855 in words is "one hundred twenty-seven million, six hundred sixty-four thousand, eight hundred fifty-five".