2269661 has 2 divisors, whose sum is σ = 2269662. Its totient is φ = 2269660.

The previous prime is 2269639. The next prime is 2269699. The reversal of 2269661 is 1669622.

2269661 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1932100 + 337561 = 1390^2 + 581^2 .

It is a cyclic number.

It is not a de Polignac number, because 2269661 - 2¹⁸ = 2007517 is a prime.

It is a super-2 number, since 2×2269661² = 10302722109842, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2269601) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1134830 + 1134831.

It is an arithmetic number, because the mean of its divisors is an integer number (1134831).

2^2269661 is an apocalyptic number.

It is an amenable number.

2269661 is a deficient number, since it is larger than the sum of its proper divisors (1).

2269661 is an equidigital number, since it uses as much as digits as its factorization.

2269661 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 7776, while the sum is 32.

The square root of 2269661 is about 1506.5394120301. The cubic root of 2269661 is about 131.4176403615.

The spelling of 2269661 in words is "two million, two hundred sixty-nine thousand, six hundred sixty-one".