6650449 has 4 divisors (see below), whose sum is σ = 7162036. Its totient is φ = 6138864.

The previous prime is 6650443. The next prime is 6650459. The reversal of 6650449 is 9440566.

6650449 = T₁₀₀₅ + T₁₀₀₆ + ... + T₁₀₁₇.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 9440566 = 2 ⋅4720283.

It can be written as a sum of positive squares in 2 ways, for example, as 3356224 + 3294225 = 1832^2 + 1815^2 .

It is a cyclic number.

It is not a de Polignac number, because 6650449 - 2¹¹ = 6648401 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6650443) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 255774 + ... + 255799.

It is an arithmetic number, because the mean of its divisors is an integer number (1790509).

Almost surely, 2^6650449 is an apocalyptic number.

It is an amenable number.

6650449 is a deficient number, since it is larger than the sum of its proper divisors (511587).

6650449 is a wasteful number, since it uses less digits than its factorization.

6650449 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 511586.

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

The square root of 6650449 is about 2578.8464475420. The cubic root of 6650449 is about 188.0544677701.

The spelling of 6650449 in words is "six million, six hundred fifty thousand, four hundred forty-nine".