686445676 has 24 divisors (see below), whose sum is σ = 1373531936. Its totient is φ = 294053760.

The previous prime is 686445673. The next prime is 686445677. The reversal of 686445676 is 676544686.

It is not an unprimeable number, because it can be changed into a prime (686445673) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 75706 + ... + 84286.

Almost surely, 2^686445676 is an apocalyptic number.

It is an amenable number.

686445676 is an abundant number, since it is smaller than the sum of its proper divisors (687086260).

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

686445676 is a wasteful number, since it uses less digits than its factorization.

686445676 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11449 (or 11447 counting only the distinct ones).

The product of its digits is 5806080, while the sum is 52.

The square root of 686445676 is about 26200.1083203868. The cubic root of 686445676 is about 882.1356856124.

The spelling of 686445676 in words is "six hundred eighty-six million, four hundred forty-five thousand, six hundred seventy-six".