2866691 has 2 divisors, whose sum is σ = 2866692. Its totient is φ = 2866690.

The previous prime is 2866667. The next prime is 2866709. The reversal of 2866691 is 1966682.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2866691 - 2⁶ = 2866627 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (2860691) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1433345 + 1433346.

It is an arithmetic number, because the mean of its divisors is an integer number (1433346).

2^2866691 is an apocalyptic number.

2866691 is a deficient number, since it is larger than the sum of its proper divisors (1).

2866691 is an equidigital number, since it uses as much as digits as its factorization.

2866691 is an evil number, because the sum of its binary digits is even.

The product of its digits is 31104, while the sum is 38.

The square root of 2866691 is about 1693.1305324753. The cubic root of 2866691 is about 142.0562331009.

Subtracting from 2866691 its reverse (1966682), we obtain a palindrome (900009).

The spelling of 2866691 in words is "two million, eight hundred sixty-six thousand, six hundred ninety-one".