2016686890 has 8 divisors (see below), whose sum is σ = 3630036420. Its totient is φ = 806674752.

The previous prime is 2016686873. The next prime is 2016686891. The reversal of 2016686890 is 986866102.

It can be written as a sum of positive squares in 2 ways, for example, as 2001578121 + 15108769 = 44739^2 + 3887^2 .

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

It is a self number, because there is not a number n which added to its sum of digits gives 2016686890.

It is not an unprimeable number, because it can be changed into a prime (2016686891) 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, 100834335 + ... + 100834354.

Almost surely, 2^2016686890 is an apocalyptic number.

2016686890 is a deficient number, since it is larger than the sum of its proper divisors (1613349530).

2016686890 is a wasteful number, since it uses less digits than its factorization.

2016686890 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 201668696.

The product of its (nonzero) digits is 248832, while the sum is 46.

The square root of 2016686890 is about 44907.5371179494. The cubic root of 2016686890 is about 1263.4153769249.

The spelling of 2016686890 in words is "two billion, sixteen million, six hundred eighty-six thousand, eight hundred ninety".