1688080271 has 4 divisors (see below), whose sum is σ = 1690199112. Its totient is φ = 1685961432.

The previous prime is 1688080253. The next prime is 1688080313. The reversal of 1688080271 is 1720808861.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1720808861 = 113 ⋅15228397.

It is a cyclic number.

It is not a de Polignac number, because 1688080271 - 2³⁰ = 614338447 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 (1688080201) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1058225 + ... + 1059818.

It is an arithmetic number, because the mean of its divisors is an integer number (422549778).

Almost surely, 2^1688080271 is an apocalyptic number.

1688080271 is a deficient number, since it is larger than the sum of its proper divisors (2118841).

1688080271 is an equidigital number, since it uses as much as digits as its factorization.

1688080271 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2118840.

The product of its (nonzero) digits is 43008, while the sum is 41.

The square root of 1688080271 is about 41086.2540395203. The cubic root of 1688080271 is about 1190.6872359740.

The spelling of 1688080271 in words is "one billion, six hundred eighty-eight million, eighty thousand, two hundred seventy-one".