687091341927 has 4 divisors (see below), whose sum is σ = 916121789240. Its totient is φ = 458060894616.

The previous prime is 687091341907. The next prime is 687091341967. The reversal of 687091341927 is 729143190786.

It is a happy number.

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

It is not a de Polignac number, because 687091341927 - 2¹² = 687091337831 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 (687091341907) 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, 114515223652 + ... + 114515223657.

It is an arithmetic number, because the mean of its divisors is an integer number (229030447310).

Almost surely, 2^687091341927 is an apocalyptic number.

687091341927 is a deficient number, since it is larger than the sum of its proper divisors (229030447313).

687091341927 is a wasteful number, since it uses less digits than its factorization.

687091341927 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 229030447312.

The product of its (nonzero) digits is 4572288, while the sum is 57.

The spelling of 687091341927 in words is "six hundred eighty-seven billion, ninety-one million, three hundred forty-one thousand, nine hundred twenty-seven".