2823661 has 2 divisors, whose sum is σ = 2823662. Its totient is φ = 2823660.

The previous prime is 2823637. The next prime is 2823671. The reversal of 2823661 is 1663282.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2621161 + 202500 = 1619^2 + 450^2 .

It is a cyclic number.

It is not a de Polignac number, because 2823661 - 2¹³ = 2815469 is a prime.

It is a super-2 number, since 2×2823661² = 15946122885842, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2823631) 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, 1411830 + 1411831.

It is an arithmetic number, because the mean of its divisors is an integer number (1411831).

2^2823661 is an apocalyptic number.

It is an amenable number.

2823661 is a deficient number, since it is larger than the sum of its proper divisors (1).

2823661 is an equidigital number, since it uses as much as digits as its factorization.

2823661 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3456, while the sum is 28.

The square root of 2823661 is about 1680.3752557093. The cubic root of 2823661 is about 141.3418761647.

The spelling of 2823661 in words is "two million, eight hundred twenty-three thousand, six hundred sixty-one".