2268649 has 2 divisors, whose sum is σ = 2268650. Its totient is φ = 2268648.

The previous prime is 2268647. The next prime is 2268659. The reversal of 2268649 is 9468622.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1946025 + 322624 = 1395^2 + 568^2 .

It is a cyclic number.

It is not a de Polignac number, because 2268649 - 2¹ = 2268647 is a prime.

Together with 2268647, it forms a pair of twin primes.

It is a d-powerful number, because it can be written as 2¹⁷ + 2²¹ + 6² + 8⁵ + 6² + 4⁵ + 9⁴ .

It is not a weakly prime, because it can be changed into another prime (2268647) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1134324 + 1134325.

It is an arithmetic number, because the mean of its divisors is an integer number (1134325).

2^2268649 is an apocalyptic number.

It is an amenable number.

2268649 is a deficient number, since it is larger than the sum of its proper divisors (1).

2268649 is an equidigital number, since it uses as much as digits as its factorization.

2268649 is an evil number, because the sum of its binary digits is even.

The product of its digits is 41472, while the sum is 37.

The square root of 2268649 is about 1506.2035055065. The cubic root of 2268649 is about 131.3981052233.

The spelling of 2268649 in words is "two million, two hundred sixty-eight thousand, six hundred forty-nine".