1020688671 has 12 divisors (see below), whose sum is σ = 1406238936. Its totient is φ = 658506960.

The previous prime is 1020688651. The next prime is 1020688673. The reversal of 1020688671 is 1768860201.

It is not a de Polignac number, because 1020688671 - 2⁵ = 1020688639 is a prime.

It is a super-3 number, since 3×1020688671³ (a number of 28 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1020688673) 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 11 ways as a sum of consecutive naturals, for example, 174136 + ... + 179901.

It is an arithmetic number, because the mean of its divisors is an integer number (117186578).

Almost surely, 2^1020688671 is an apocalyptic number.

1020688671 is a deficient number, since it is larger than the sum of its proper divisors (385550265).

1020688671 is an equidigital number, since it uses as much as digits as its factorization.

1020688671 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 354102 (or 354071 counting only the distinct ones).

The product of its (nonzero) digits is 32256, while the sum is 39.

The square root of 1020688671 is about 31948.2185888353. The cubic root of 1020688671 is about 1006.8492049557.

The spelling of 1020688671 in words is "one billion, twenty million, six hundred eighty-eight thousand, six hundred seventy-one".