2668571 has 2 divisors, whose sum is σ = 2668572. Its totient is φ = 2668570.

The previous prime is 2668559. The next prime is 2668577. The reversal of 2668571 is 1758662.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2668571 is a prime.

It is a Chen prime.

It is a d-powerful number, because it can be written as 2¹⁹ + 6 + 6⁶ + 8⁷ + 5³ + 7³ + 1 .

It is not a weakly prime, because it can be changed into another prime (2668577) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1334285 + 1334286.

It is an arithmetic number, because the mean of its divisors is an integer number (1334286).

2^2668571 is an apocalyptic number.

2668571 is a deficient number, since it is larger than the sum of its proper divisors (1).

2668571 is an equidigital number, since it uses as much as digits as its factorization.

2668571 is an evil number, because the sum of its binary digits is even.

The product of its digits is 20160, while the sum is 35.

The square root of 2668571 is about 1633.5761384153. The cubic root of 2668571 is about 138.7052567902.

Subtracting from 2668571 its reverse (1758662), we obtain a palindrome (909909).

The spelling of 2668571 in words is "two million, six hundred sixty-eight thousand, five hundred seventy-one".