2016666669 has 16 divisors (see below), whose sum is σ = 2878387200. Its totient is φ = 1252094256.

The previous prime is 2016666629. The next prime is 2016666689. The reversal of 2016666669 is 9666666102.

It is a happy number.

It is not a de Polignac number, because 2016666669 - 2¹¹ = 2016664621 is a prime.

It is a super-2 number, since 2×2016666669² = 8133888907711111122, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2016666629) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 296469 + ... + 303194.

It is an arithmetic number, because the mean of its divisors is an integer number (179899200).

Almost surely, 2^2016666669 is an apocalyptic number.

It is an amenable number.

2016666669 is a deficient number, since it is larger than the sum of its proper divisors (861720531).

2016666669 is a wasteful number, since it uses less digits than its factorization.

2016666669 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 599744.

The product of its (nonzero) digits is 839808, while the sum is 48.

The square root of 2016666669 is about 44907.3119770044. The cubic root of 2016666669 is about 1263.4111542222.

It can be divided in two parts, 201666 and 6669, that added together give a triangular number (208335 = T₆₄₅).

The spelling of 2016666669 in words is "two billion, sixteen million, six hundred sixty-six thousand, six hundred sixty-nine".