127671577 has 6 divisors (see below), whose sum is σ = 140333354. Its totient is φ = 116064960.

The previous prime is 127671517. The next prime is 127671587. The reversal of 127671577 is 775176721.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 126877696 + 793881 = 11264^2 + 891^2 .

It is not a de Polignac number, because 127671577 - 2¹⁵ = 127638809 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (127671517) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 527448 + ... + 527689.

Almost surely, 2^127671577 is an apocalyptic number.

It is an amenable number.

127671577 is a deficient number, since it is larger than the sum of its proper divisors (12661777).

127671577 is a wasteful number, since it uses less digits than its factorization.

127671577 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1055159 (or 1055148 counting only the distinct ones).

The product of its digits is 144060, while the sum is 43.

The square root of 127671577 is about 11299.1847936035. The cubic root of 127671577 is about 503.5370226088.

The spelling of 127671577 in words is "one hundred twenty-seven million, six hundred seventy-one thousand, five hundred seventy-seven".