687106853 has 4 divisors (see below), whose sum is σ = 716981088. Its totient is φ = 657232620.

The previous prime is 687106841. The next prime is 687106919. The reversal of 687106853 is 358601786.

687106853 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, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 687106853 - 2⁴ = 687106837 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 (687100853) 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, 14937083 + ... + 14937128.

It is an arithmetic number, because the mean of its divisors is an integer number (179245272).

Almost surely, 2^687106853 is an apocalyptic number.

It is an amenable number.

687106853 is a deficient number, since it is larger than the sum of its proper divisors (29874235).

687106853 is a wasteful number, since it uses less digits than its factorization.

687106853 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29874234.

The product of its (nonzero) digits is 241920, while the sum is 44.

The square root of 687106853 is about 26212.7231130228. The cubic root of 687106853 is about 882.4188158913.

The spelling of 687106853 in words is "six hundred eighty-seven million, one hundred six thousand, eight hundred fifty-three".