2016668687 has 8 divisors (see below), whose sum is σ = 2217326592. Its totient is φ = 1818898200.

The previous prime is 2016668663. The next prime is 2016668701. The reversal of 2016668687 is 7868666102.

It is a happy number.

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 2016668687 - 2¹⁰ = 2016667663 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 (2016668657) 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, 720389 + ... + 723182.

It is an arithmetic number, because the mean of its divisors is an integer number (277165824).

Almost surely, 2^2016668687 is an apocalyptic number.

2016668687 is a deficient number, since it is larger than the sum of its proper divisors (200657905).

2016668687 is a wasteful number, since it uses less digits than its factorization.

2016668687 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1443709.

The product of its (nonzero) digits is 1161216, while the sum is 50.

The square root of 2016668687 is about 44907.3344455001. The cubic root of 2016668687 is about 1263.4115756375.

The spelling of 2016668687 in words is "two billion, sixteen million, six hundred sixty-eight thousand, six hundred eighty-seven".