6618261 has 16 divisors (see below), whose sum is σ = 9737280. Its totient is φ = 3972480.

The previous prime is 6618247. The next prime is 6618277. The reversal of 6618261 is 1628166.

It is not a de Polignac number, because 6618261 - 2⁵ = 6618229 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6618281) 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 15 ways as a sum of consecutive naturals, for example, 471 + ... + 3668.

It is an arithmetic number, because the mean of its divisors is an integer number (608580).

Almost surely, 2^6618261 is an apocalyptic number.

It is an amenable number.

6618261 is a deficient number, since it is larger than the sum of its proper divisors (3119019).

6618261 is a wasteful number, since it uses less digits than its factorization.

6618261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4196.

The product of its digits is 3456, while the sum is 30.

The square root of 6618261 is about 2572.5981030857. The cubic root of 6618261 is about 187.7505840693.

The spelling of 6618261 in words is "six million, six hundred eighteen thousand, two hundred sixty-one".