687672105 has 16 divisors (see below), whose sum is σ = 1100604480. Its totient is φ = 366648768.

The previous prime is 687672103. The next prime is 687672113. The reversal of 687672105 is 501276786.

687672105 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 687672105 - 2¹ = 687672103 is a prime.

It is not an unprimeable number, because it can be changed into a prime (687672103) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 82719 + ... + 90651.

It is an arithmetic number, because the mean of its divisors is an integer number (68787780).

Almost surely, 2^687672105 is an apocalyptic number.

It is an amenable number.

687672105 is a deficient number, since it is larger than the sum of its proper divisors (412932375).

687672105 is a wasteful number, since it uses less digits than its factorization.

687672105 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13720.

The product of its (nonzero) digits is 141120, while the sum is 42.

The square root of 687672105 is about 26223.5029124638. The cubic root of 687672105 is about 882.6607250324.

The spelling of 687672105 in words is "six hundred eighty-seven million, six hundred seventy-two thousand, one hundred five".