688426271 has 32 divisors (see below), whose sum is σ = 825043968. Its totient is φ = 567959040.

The previous prime is 688426261. The next prime is 688426279. The reversal of 688426271 is 172624886.

It is a cyclic number.

It is not a de Polignac number, because 688426271 - 2¹⁰ = 688425247 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 (688426279) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 848456 + ... + 849266.

It is an arithmetic number, because the mean of its divisors is an integer number (25782624).

Almost surely, 2^688426271 is an apocalyptic number.

688426271 is a deficient number, since it is larger than the sum of its proper divisors (136617697).

688426271 is a wasteful number, since it uses less digits than its factorization.

688426271 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1031.

The product of its digits is 258048, while the sum is 44.

The square root of 688426271 is about 26237.8785537246. The cubic root of 688426271 is about 882.9832767762.

The spelling of 688426271 in words is "six hundred eighty-eight million, four hundred twenty-six thousand, two hundred seventy-one".