686850111 has 10 divisors (see below), whose sum is σ = 1026035472. Its totient is φ = 457900020.

The previous prime is 686850107. The next prime is 686850119. The reversal of 686850111 is 111058686.

It is not a de Polignac number, because 686850111 - 2² = 686850107 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (686850119) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 4239735 + ... + 4239896.

Almost surely, 2^686850111 is an apocalyptic number.

686850111 is a deficient number, since it is larger than the sum of its proper divisors (339185361).

686850111 is an equidigital number, since it uses as much as digits as its factorization.

686850111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8479643 (or 8479634 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 36.

The square root of 686850111 is about 26207.8253771655. The cubic root of 686850111 is about 882.3088949989.

The spelling of 686850111 in words is "six hundred eighty-six million, eight hundred fifty thousand, one hundred eleven".