687106841 has 2 divisors, whose sum is σ = 687106842. Its totient is φ = 687106840.

The previous prime is 687106837. The next prime is 687106919. The reversal of 687106841 is 148601786.

687106841 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 466732816 + 220374025 = 21604^2 + 14845^2 .

It is a cyclic number.

It is not a de Polignac number, because 687106841 - 2² = 687106837 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (687106241) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 343553420 + 343553421.

It is an arithmetic number, because the mean of its divisors is an integer number (343553421).

Almost surely, 2^687106841 is an apocalyptic number.

It is an amenable number.

687106841 is a deficient number, since it is larger than the sum of its proper divisors (1).

687106841 is an equidigital number, since it uses as much as digits as its factorization.

687106841 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 64512, while the sum is 41.

The square root of 687106841 is about 26212.7228841263. The cubic root of 687106841 is about 882.4188107543.

The spelling of 687106841 in words is "six hundred eighty-seven million, one hundred six thousand, eight hundred forty-one".