6616020 has 48 divisors (see below), whose sum is σ = 19127808. Its totient is φ = 1706880.

The previous prime is 6616003. The next prime is 6616021. The reversal of 6616020 is 206166.

It is a super-4 number, since 4×6616020⁴ (a number of 28 digits) contains 4444 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6616021) 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, 82 + ... + 3638.

It is an arithmetic number, because the mean of its divisors is an integer number (398496).

Almost surely, 2^6616020 is an apocalyptic number.

6616020 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 6616020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (9563904).

6616020 is an abundant number, since it is smaller than the sum of its proper divisors (12511788).

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

6616020 is a wasteful number, since it uses less digits than its factorization.

6616020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3600 (or 3598 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 21.

The square root of 6616020 is about 2572.1625143058. The cubic root of 6616020 is about 187.7293903570.

The spelling of 6616020 in words is "six million, six hundred sixteen thousand, twenty".