1686875061 has 8 divisors (see below), whose sum is σ = 2249380224. Its totient is φ = 1124476640.

The previous prime is 1686875051. The next prime is 1686875063. The reversal of 1686875061 is 1605786861.

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 1686875061 - 2⁷ = 1686874933 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 1686875061.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1686875063) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 23881 + ... + 62801.

It is an arithmetic number, because the mean of its divisors is an integer number (281172528).

Almost surely, 2^1686875061 is an apocalyptic number.

It is an amenable number.

1686875061 is a deficient number, since it is larger than the sum of its proper divisors (562505163).

1686875061 is a wasteful number, since it uses less digits than its factorization.

1686875061 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53371.

The product of its (nonzero) digits is 483840, while the sum is 48.

The square root of 1686875061 is about 41071.5845932440. The cubic root of 1686875061 is about 1190.4038035966.

The spelling of 1686875061 in words is "one billion, six hundred eighty-six million, eight hundred seventy-five thousand, sixty-one".