3605005220 has 24 divisors (see below), whose sum is σ = 7582311744. Its totient is φ = 1439754336.

The previous prime is 3605005219. The next prime is 3605005273. The reversal of 3605005220 is 225005063.

It is a happy number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 127304 + ... + 153023.

It is an arithmetic number, because the mean of its divisors is an integer number (315929656).

Almost surely, 2^3605005220 is an apocalyptic number.

It is an amenable number.

3605005220 is an abundant number, since it is smaller than the sum of its proper divisors (3977306524).

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

3605005220 is a wasteful number, since it uses less digits than its factorization.

3605005220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 280979 (or 280977 counting only the distinct ones).

The product of its (nonzero) digits is 1800, while the sum is 23.

The square root of 3605005220 is about 60041.6956789197. The cubic root of 3605005220 is about 1533.3288223980.

The spelling of 3605005220 in words is "three billion, six hundred five million, five thousand, two hundred twenty".