687507107 has 4 divisors (see below), whose sum is σ = 785722416. Its totient is φ = 589291800.

The previous prime is 687507083. The next prime is 687507113. The reversal of 687507107 is 701705786.

687507107 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 687507107 - 2²² = 683312803 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (687507127) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 49107644 + ... + 49107657.

It is an arithmetic number, because the mean of its divisors is an integer number (196430604).

Almost surely, 2^687507107 is an apocalyptic number.

687507107 is a deficient number, since it is larger than the sum of its proper divisors (98215309).

687507107 is an equidigital number, since it uses as much as digits as its factorization.

687507107 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 98215308.

The product of its (nonzero) digits is 82320, while the sum is 41.

The square root of 687507107 is about 26220.3567290760. The cubic root of 687507107 is about 882.5901250557.

It can be divided in two parts, 68750 and 7107, that added together give a palindrome (75857).

The spelling of 687507107 in words is "six hundred eighty-seven million, five hundred seven thousand, one hundred seven".