2866261 has 2 divisors, whose sum is σ = 2866262. Its totient is φ = 2866260.

The previous prime is 2866247. The next prime is 2866267. The reversal of 2866261 is 1626682.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2402500 + 463761 = 1550^2 + 681^2 .

It is a cyclic number.

It is not a de Polignac number, because 2866261 - 2⁹ = 2865749 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2866267) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1433130 + 1433131.

It is an arithmetic number, because the mean of its divisors is an integer number (1433131).

2^2866261 is an apocalyptic number.

It is an amenable number.

2866261 is a deficient number, since it is larger than the sum of its proper divisors (1).

2866261 is an equidigital number, since it uses as much as digits as its factorization.

2866261 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 6912, while the sum is 31.

The square root of 2866261 is about 1693.0035440010. The cubic root of 2866261 is about 142.0491299944.

The spelling of 2866261 in words is "two million, eight hundred sixty-six thousand, two hundred sixty-one".