7127725687 has 4 divisors (see below), whose sum is σ = 7134224256. Its totient is φ = 7121227120.

The previous prime is 7127725681. The next prime is 7127725751. The reversal of 7127725687 is 7865277217.

7127725687 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is not a de Polignac number, because 7127725687 - 2¹⁹ = 7127201399 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7127725681) by changing a digit.

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, 3247639 + ... + 3249832.

It is an arithmetic number, because the mean of its divisors is an integer number (1783556064).

Almost surely, 2^7127725687 is an apocalyptic number.

7127725687 is a deficient number, since it is larger than the sum of its proper divisors (6498569).

7127725687 is a wasteful number, since it uses less digits than its factorization.

7127725687 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6498568.

The product of its digits is 2304960, while the sum is 52.

The square root of 7127725687 is about 84425.8591131888. The cubic root of 7127725687 is about 1924.4959100162.

The spelling of 7127725687 in words is "seven billion, one hundred twenty-seven million, seven hundred twenty-five thousand, six hundred eighty-seven".