3266561 has 2 divisors, whose sum is σ = 3266562. Its totient is φ = 3266560.

The previous prime is 3266551. The next prime is 3266569. The reversal of 3266561 is 1656623.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1874161 + 1392400 = 1369^2 + 1180^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3266561 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (3266569) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1633280 + 1633281.

It is an arithmetic number, because the mean of its divisors is an integer number (1633281).

It is a Proth number, since it is equal to 1595 ⋅ 2¹¹ + 1 and 1595 < 2¹¹.

Almost surely, 2^3266561 is an apocalyptic number.

It is an amenable number.

3266561 is a deficient number, since it is larger than the sum of its proper divisors (1).

3266561 is an equidigital number, since it uses as much as digits as its factorization.

3266561 is an evil number, because the sum of its binary digits is even.

The product of its digits is 6480, while the sum is 29.

The square root of 3266561 is about 1807.3629961909. The cubic root of 3266561 is about 148.3759767421.

The spelling of 3266561 in words is "three million, two hundred sixty-six thousand, five hundred sixty-one".