2266861 has 2 divisors, whose sum is σ = 2266862. Its totient is φ = 2266860.

The previous prime is 2266837. The next prime is 2266883. The reversal of 2266861 is 1686622.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2157961 + 108900 = 1469^2 + 330^2 .

It is a cyclic number.

It is not a de Polignac number, because 2266861 - 2⁵ = 2266829 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2266801) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1133430 + 1133431.

It is an arithmetic number, because the mean of its divisors is an integer number (1133431).

2^2266861 is an apocalyptic number.

It is an amenable number.

2266861 is a deficient number, since it is larger than the sum of its proper divisors (1).

2266861 is an equidigital number, since it uses as much as digits as its factorization.

2266861 is an evil number, because the sum of its binary digits is even.

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

The square root of 2266861 is about 1505.6098432197. The cubic root of 2266861 is about 131.3635763678.

The spelling of 2266861 in words is "two million, two hundred sixty-six thousand, eight hundred sixty-one".