6650145 has 24 divisors (see below), whose sum is σ = 12206376. Its totient is φ = 3337728.

The previous prime is 6650131. The next prime is 6650153. The reversal of 6650145 is 5410566.

It is a happy number.

6650145 is a `hidden beast` number, since 6 + 650 + 1 + 4 + 5 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 239121 + 6411024 = 489^2 + 2532^2 .

It is not a de Polignac number, because 6650145 - 2⁹ = 6649633 is a prime.

It is a Curzon number.

It is an unprimeable number.

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 in 23 ways as a sum of consecutive naturals, for example, 3582 + ... + 5111.

It is an arithmetic number, because the mean of its divisors is an integer number (508599).

Almost surely, 2^6650145 is an apocalyptic number.

It is an amenable number.

6650145 is a deficient number, since it is larger than the sum of its proper divisors (5556231).

6650145 is a wasteful number, since it uses less digits than its factorization.

6650145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8721 (or 8718 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 27.

The square root of 6650145 is about 2578.7875057864. The cubic root of 6650145 is about 188.0516023280.

The spelling of 6650145 in words is "six million, six hundred fifty thousand, one hundred forty-five".