687885061 has 8 divisors (see below), whose sum is σ = 709261344. Its totient is φ = 666753360.

The previous prime is 687885053. The next prime is 687885089. The reversal of 687885061 is 160588786.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 687885061 - 2³ = 687885053 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 687884996 and 687885014.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (687885031) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 55426 + ... + 66691.

It is an arithmetic number, because the mean of its divisors is an integer number (88657668).

Almost surely, 2^687885061 is an apocalyptic number.

It is an amenable number.

687885061 is a deficient number, since it is larger than the sum of its proper divisors (21376283).

687885061 is a wasteful number, since it uses less digits than its factorization.

687885061 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 122291.

The product of its (nonzero) digits is 645120, while the sum is 49.

The square root of 687885061 is about 26227.5630015448. The cubic root of 687885061 is about 882.7518287702.

The spelling of 687885061 in words is "six hundred eighty-seven million, eight hundred eighty-five thousand, sixty-one".