6620109 has 8 divisors (see below), whose sum is σ = 8850432. Its totient is φ = 4401600.

The previous prime is 6620101. The next prime is 6620171. The reversal of 6620109 is 9010266.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 6620109 - 2³ = 6620101 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6620101) 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 7 ways as a sum of consecutive naturals, for example, 1549 + ... + 3954.

It is an arithmetic number, because the mean of its divisors is an integer number (1106304).

Almost surely, 2^6620109 is an apocalyptic number.

It is an amenable number.

6620109 is a deficient number, since it is larger than the sum of its proper divisors (2230323).

6620109 is a wasteful number, since it uses less digits than its factorization.

6620109 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5907.

The product of its (nonzero) digits is 648, while the sum is 24.

The square root of 6620109 is about 2572.9572479931. The cubic root of 6620109 is about 187.7680574806.

The spelling of 6620109 in words is "six million, six hundred twenty thousand, one hundred nine".