2116669 has 2 divisors, whose sum is σ = 2116670. Its totient is φ = 2116668.

The previous prime is 2116663. The next prime is 2116679. The reversal of 2116669 is 9666112.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1416100 + 700569 = 1190^2 + 837^2 .

It is a cyclic number.

It is not a de Polignac number, because 2116669 - 2¹¹ = 2114621 is a prime.

It is a super-2 number, since 2×2116669² = 8960575311122, which contains 22 as substring.

It is equal to p₁₅₆₉₆₄ and since 2116669 and 156964 have the same sum of digits, it is a Honaker prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2116669.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2116663) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1058334 + 1058335.

It is an arithmetic number, because the mean of its divisors is an integer number (1058335).

2^2116669 is an apocalyptic number.

It is an amenable number.

2116669 is a deficient number, since it is larger than the sum of its proper divisors (1).

2116669 is an equidigital number, since it uses as much as digits as its factorization.

2116669 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3888, while the sum is 31.

The square root of 2116669 is about 1454.8776580868. The cubic root of 2116669 is about 128.3958489291.

The spelling of 2116669 in words is "two million, one hundred sixteen thousand, six hundred sixty-nine".