6620221104 has 40 divisors (see below), whose sum is σ = 19545415680. Its totient is φ = 1891491648.

The previous prime is 6620221033. The next prime is 6620221163. The reversal of 6620221104 is 4011220266.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9851184 + ... + 9851855.

It is an arithmetic number, because the mean of its divisors is an integer number (488635392).

Almost surely, 2^6620221104 is an apocalyptic number.

It is an amenable number.

6620221104 is an abundant number, since it is smaller than the sum of its proper divisors (12925194576).

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

6620221104 is a wasteful number, since it uses less digits than its factorization.

6620221104 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19703057 (or 19703051 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 24.

The square root of 6620221104 is about 81364.7411597923. The cubic root of 6620221104 is about 1877.6911735395.

The spelling of 6620221104 in words is "six billion, six hundred twenty million, two hundred twenty-one thousand, one hundred four".