2245669 has 4 divisors (see below), whose sum is σ = 2249100. Its totient is φ = 2242240.

The previous prime is 2245657. The next prime is 2245679. The reversal of 2245669 is 9665422.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1295044 + 950625 = 1138^2 + 975^2 .

It is a cyclic number.

It is not a de Polignac number, because 2245669 - 2⁵ = 2245637 is a prime.

It is a super-2 number, since 2×2245669² = 10086058515122, which contains 22 as substring.

It is a Duffinian number.

It is a plaindrome in base 10.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2245619) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 394 + ... + 2155.

It is an arithmetic number, because the mean of its divisors is an integer number (562275).

2^2245669 is an apocalyptic number.

It is an amenable number.

2245669 is a deficient number, since it is larger than the sum of its proper divisors (3431).

2245669 is an equidigital number, since it uses as much as digits as its factorization.

2245669 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3430.

The product of its digits is 25920, while the sum is 34.

The square root of 2245669 is about 1498.5556379394. Note that the first 3 decimals coincide. The cubic root of 2245669 is about 130.9529384397.

The spelling of 2245669 in words is "two million, two hundred forty-five thousand, six hundred sixty-nine".