2666693 has 2 divisors, whose sum is σ = 2666694. Its totient is φ = 2666692.

The previous prime is 2666683. The next prime is 2666717. The reversal of 2666693 is 3966662.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2666689 + 4 = 1633^2 + 2^2 .

It is a cyclic number.

It is not a de Polignac number, because 2666693 - 2¹⁰ = 2665669 is a prime.

It is a super-2 number, since 2×2666693² = 14222503112498, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2666633) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1333346 + 1333347.

It is an arithmetic number, because the mean of its divisors is an integer number (1333347).

2^2666693 is an apocalyptic number.

It is an amenable number.

2666693 is a deficient number, since it is larger than the sum of its proper divisors (1).

2666693 is an equidigital number, since it uses as much as digits as its factorization.

2666693 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 69984, while the sum is 38.

The square root of 2666693 is about 1633.0012247393. The cubic root of 2666693 is about 138.6727113315.

The spelling of 2666693 in words is "two million, six hundred sixty-six thousand, six hundred ninety-three".