6604161 has 4 divisors (see below), whose sum is σ = 8805552. Its totient is φ = 4402772.

The previous prime is 6604133. The next prime is 6604181. The reversal of 6604161 is 1614066.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 6604161 - 2⁶ = 6604097 is a prime.

It is a super-2 number, since 2×6604161² = 87229885027842, which contains 22 as substring.

It is a D-number.

It is not an unprimeable number, because it can be changed into a prime (6604181) 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, 1100691 + ... + 1100696.

It is an arithmetic number, because the mean of its divisors is an integer number (2201388).

Almost surely, 2^6604161 is an apocalyptic number.

It is an amenable number.

6604161 is a deficient number, since it is larger than the sum of its proper divisors (2201391).

6604161 is a wasteful number, since it uses less digits than its factorization.

6604161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2201390.

The product of its (nonzero) digits is 864, while the sum is 24.

The square root of 6604161 is about 2569.8562216591. The cubic root of 6604161 is about 187.6171570029.

The spelling of 6604161 in words is "six million, six hundred four thousand, one hundred sixty-one".