685238876 has 24 divisors (see below), whose sum is σ = 1442609280. Its totient is φ = 278217072.

The previous prime is 685238837. The next prime is 685238899. The reversal of 685238876 is 678832586.

685238876 is nontrivially palindromic in base 11.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 643490 + ... + 644553.

It is an arithmetic number, because the mean of its divisors is an integer number (60108720).

Almost surely, 2^685238876 is an apocalyptic number.

It is an amenable number.

685238876 is an abundant number, since it is smaller than the sum of its proper divisors (757370404).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

685238876 is a wasteful number, since it uses less digits than its factorization.

685238876 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1288073 (or 1288071 counting only the distinct ones).

The product of its digits is 3870720, while the sum is 53.

The square root of 685238876 is about 26177.0677502275. The cubic root of 685238876 is about 881.6184386593.

The spelling of 685238876 in words is "six hundred eighty-five million, two hundred thirty-eight thousand, eight hundred seventy-six".