6605851 has 4 divisors (see below), whose sum is σ = 7549552. Its totient is φ = 5662152.

The previous prime is 6605849. The next prime is 6605857. The reversal of 6605851 is 1585066.

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

It is a cyclic number.

It is not a de Polignac number, because 6605851 - 2¹ = 6605849 is a prime.

It is a Duffinian number.

6605851 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (6605857) 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 3 ways as a sum of consecutive naturals, for example, 471840 + ... + 471853.

It is an arithmetic number, because the mean of its divisors is an integer number (1887388).

Almost surely, 2^6605851 is an apocalyptic number.

6605851 is a deficient number, since it is larger than the sum of its proper divisors (943701).

6605851 is an equidigital number, since it uses as much as digits as its factorization.

6605851 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 943700.

The product of its (nonzero) digits is 7200, while the sum is 31.

The square root of 6605851 is about 2570.1850127958. The cubic root of 6605851 is about 187.6331593360.

The spelling of 6605851 in words is "six million, six hundred five thousand, eight hundred fifty-one".