6613641 has 6 divisors (see below), whose sum is σ = 9553050. Its totient is φ = 4409088.

The previous prime is 6613631. The next prime is 6613753. The reversal of 6613641 is 1463166.

6613641 is a `hidden beast` number, since 6 + 6 + 13 + 641 = 666.

It can be written as a sum of positive squares in only one way, i.e., 6610041 + 3600 = 2571^2 + 60^2 .

It is not a de Polignac number, because 6613641 - 2⁹ = 6613129 is a prime.

It is not an unprimeable number, because it can be changed into a prime (6613601) by changing a digit.

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 5 ways as a sum of consecutive naturals, for example, 367416 + ... + 367433.

It is an arithmetic number, because the mean of its divisors is an integer number (1592175).

Almost surely, 2^6613641 is an apocalyptic number.

It is an amenable number.

6613641 is a deficient number, since it is larger than the sum of its proper divisors (2939409).

6613641 is a wasteful number, since it uses less digits than its factorization.

6613641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 734855 (or 734852 counting only the distinct ones).

The product of its digits is 2592, while the sum is 27.

The square root of 6613641 is about 2571.7000213866. The cubic root of 6613641 is about 187.7068863057.

The spelling of 6613641 in words is "six million, six hundred thirteen thousand, six hundred forty-one".