686442112 has 32 divisors (see below), whose sum is σ = 1378321920. Its totient is φ = 340510464.

The previous prime is 686442101. The next prime is 686442143. The reversal of 686442112 is 211244686.

It is a tau number, because it is divible by the number of its divisors (32).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4858 + ... + 37369.

It is an arithmetic number, because the mean of its divisors is an integer number (43072560).

Almost surely, 2^686442112 is an apocalyptic number.

It is an amenable number.

686442112 is an abundant number, since it is smaller than the sum of its proper divisors (691879808).

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

686442112 is a wasteful number, since it uses less digits than its factorization.

686442112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42368 (or 42356 counting only the distinct ones).

The product of its digits is 18432, while the sum is 34.

The square root of 686442112 is about 26200.0403053125. The cubic root of 686442112 is about 882.1341589381.

Adding to 686442112 its reverse (211244686), we get a palindrome (897686798).

It can be divided in two parts, 68644 and 2112, that added together give a square (70756 = 266²).

The spelling of 686442112 in words is "six hundred eighty-six million, four hundred forty-two thousand, one hundred twelve".