6556103220 has 48 divisors (see below), whose sum is σ = 18501654528. Its totient is φ = 1734526080.

The previous prime is 6556103219. The next prime is 6556103249. The reversal of 6556103220 is 223016556.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 422571 + ... + 437810.

It is an arithmetic number, because the mean of its divisors is an integer number (385451136).

Almost surely, 2^6556103220 is an apocalyptic number.

6556103220 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

6556103220 is an abundant number, since it is smaller than the sum of its proper divisors (11945551308).

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

6556103220 is a wasteful number, since it uses less digits than its factorization.

6556103220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 860520 (or 860518 counting only the distinct ones).

The product of its (nonzero) digits is 10800, while the sum is 30.

The square root of 6556103220 is about 80969.7673208958. The cubic root of 6556103220 is about 1871.6095857884.

Adding to 6556103220 its reverse (223016556), we get a palindrome (6779119776).

The spelling of 6556103220 in words is "six billion, five hundred fifty-six million, one hundred three thousand, two hundred twenty".