6641017 has 4 divisors (see below), whose sum is σ = 6648676. Its totient is φ = 6633360.

The previous prime is 6640993. The next prime is 6641021. The reversal of 6641017 is 7101466.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 7101466 = 2 ⋅3550733.

It can be written as a sum of positive squares in 2 ways, for example, as 6007401 + 633616 = 2451^2 + 796^2 .

It is a cyclic number.

It is not a de Polignac number, because 6641017 - 2⁷ = 6640889 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 6640982 and 6641000.

It is not an unprimeable number, because it can be changed into a prime (6641027) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2334 + ... + 4327.

It is an arithmetic number, because the mean of its divisors is an integer number (1662169).

Almost surely, 2^6641017 is an apocalyptic number.

It is an amenable number.

6641017 is a deficient number, since it is larger than the sum of its proper divisors (7659).

6641017 is an equidigital number, since it uses as much as digits as its factorization.

6641017 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7658.

The product of its (nonzero) digits is 1008, while the sum is 25.

The square root of 6641017 is about 2577.0170740606. The cubic root of 6641017 is about 187.9655229519.

It can be divided in two parts, 664 and 1017, that added together give a square (1681 = 41²).

The spelling of 6641017 in words is "six million, six hundred forty-one thousand, seventeen".