686537677111 has 48 divisors (see below), whose sum is σ = 844985945088. Its totient is φ = 552315628800.

The previous prime is 686537677109. The next prime is 686537677127. The reversal of 686537677111 is 111776735686.

It is a happy number.

It is not a de Polignac number, because 686537677111 - 2¹ = 686537677109 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 (686537677181) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 6110635 + ... + 6221971.

It is an arithmetic number, because the mean of its divisors is an integer number (17603873856).

Almost surely, 2^686537677111 is an apocalyptic number.

686537677111 is a deficient number, since it is larger than the sum of its proper divisors (158448267977).

686537677111 is a wasteful number, since it uses less digits than its factorization.

686537677111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 111512 (or 111499 counting only the distinct ones).

The product of its digits is 8890560, while the sum is 58.

The spelling of 686537677111 in words is "six hundred eighty-six billion, five hundred thirty-seven million, six hundred seventy-seven thousand, one hundred eleven".