6601859 has 4 divisors (see below), whose sum is σ = 7202040. Its totient is φ = 6001680.

The previous prime is 6601849. The next prime is 6601883. The reversal of 6601859 is 9581066.

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 6601859 - 2⁴ = 6601843 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6601849) 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, 300074 + ... + 300095.

It is an arithmetic number, because the mean of its divisors is an integer number (1800510).

Almost surely, 2^6601859 is an apocalyptic number.

6601859 is a deficient number, since it is larger than the sum of its proper divisors (600181).

6601859 is a wasteful number, since it uses less digits than its factorization.

6601859 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 600180.

The product of its (nonzero) digits is 12960, while the sum is 35.

The square root of 6601859 is about 2569.4082976436. The cubic root of 6601859 is about 187.5953553495.

The spelling of 6601859 in words is "six million, six hundred one thousand, eight hundred fifty-nine".