1686864101 has 8 divisors (see below), whose sum is σ = 1875224064. Its totient is φ = 1506875760.

The previous prime is 1686864089. The next prime is 1686864119. The reversal of 1686864101 is 1014686861.

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

It is not a de Polignac number, because 1686864101 - 2⁶ = 1686864037 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 (1686864131) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2092481 + ... + 2093286.

It is an arithmetic number, because the mean of its divisors is an integer number (234403008).

Almost surely, 2^1686864101 is an apocalyptic number.

It is an amenable number.

1686864101 is a deficient number, since it is larger than the sum of its proper divisors (188359963).

1686864101 is a wasteful number, since it uses less digits than its factorization.

1686864101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4185811.

The product of its (nonzero) digits is 55296, while the sum is 41.

The square root of 1686864101 is about 41071.4511674472. The cubic root of 1686864101 is about 1190.4012254855.

The spelling of 1686864101 in words is "one billion, six hundred eighty-six million, eight hundred sixty-four thousand, one hundred one".