671172727 has 8 divisors (see below), whose sum is σ = 685603872. Its totient is φ = 656880000.

The previous prime is 671172713. The next prime is 671172757. The reversal of 671172727 is 727271176.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 671172727 - 2¹¹ = 671170679 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 671172727.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (671172707) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 24774 + ... + 44227.

It is an arithmetic number, because the mean of its divisors is an integer number (85700484).

Almost surely, 2^671172727 is an apocalyptic number.

671172727 is a deficient number, since it is larger than the sum of its proper divisors (14431145).

671172727 is a wasteful number, since it uses less digits than its factorization.

671172727 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 69209.

The product of its digits is 57624, while the sum is 40.

The square root of 671172727 is about 25907.0015053846. The cubic root of 671172727 is about 875.5442500321.

The spelling of 671172727 in words is "six hundred seventy-one million, one hundred seventy-two thousand, seven hundred twenty-seven".