6619872 has 48 divisors (see below), whose sum is σ = 19861632. Its totient is φ = 1891200.

The previous prime is 6619871. The next prime is 6619889. The reversal of 6619872 is 2789166.

It is a tau number, because it is divible by the number of its divisors (48).

It is a self number, because there is not a number n which added to its sum of digits gives 6619872.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6619871) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4254 + ... + 5597.

It is an arithmetic number, because the mean of its divisors is an integer number (413784).

Almost surely, 2^6619872 is an apocalyptic number.

It is an amenable number.

6619872 is an abundant number, since it is smaller than the sum of its proper divisors (13241760).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

6619872 is a wasteful number, since it uses less digits than its factorization.

6619872 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9871 (or 9863 counting only the distinct ones).

The product of its digits is 36288, while the sum is 39.

The square root of 6619872 is about 2572.9111916271. The cubic root of 6619872 is about 187.7658167541.

The spelling of 6619872 in words is "six million, six hundred nineteen thousand, eight hundred seventy-two".