6605261 has 4 divisors (see below), whose sum is σ = 7113372. Its totient is φ = 6097152.

The previous prime is 6605257. The next prime is 6605267. The reversal of 6605261 is 1625066.

6605261 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1012036 + 5593225 = 1006^2 + 2365^2 .

It is a cyclic number.

It is not a de Polignac number, because 6605261 - 2² = 6605257 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 6605261.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6605267) 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, 254036 + ... + 254061.

It is an arithmetic number, because the mean of its divisors is an integer number (1778343).

Almost surely, 2^6605261 is an apocalyptic number.

It is an amenable number.

6605261 is a deficient number, since it is larger than the sum of its proper divisors (508111).

6605261 is a wasteful number, since it uses less digits than its factorization.

6605261 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 508110.

The product of its (nonzero) digits is 2160, while the sum is 26.

The square root of 6605261 is about 2570.0702325034. The cubic root of 6605261 is about 187.6275730328.

The spelling of 6605261 in words is "six million, six hundred five thousand, two hundred sixty-one".