3658564220 has 48 divisors (see below), whose sum is σ = 8154040608. Its totient is φ = 1374105600.

The previous prime is 3658564211. The next prime is 3658564267. The reversal of 3658564220 is 224658563.

It is a happy number.

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, 134795 + ... + 159645.

It is an arithmetic number, because the mean of its divisors is an integer number (169875846).

Almost surely, 2^3658564220 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 3658564220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4077020304).

3658564220 is an abundant number, since it is smaller than the sum of its proper divisors (4495476388).

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

3658564220 is a wasteful number, since it uses less digits than its factorization.

3658564220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25310 (or 25308 counting only the distinct ones).

The product of its (nonzero) digits is 345600, while the sum is 41.

The square root of 3658564220 is about 60486.0663293622. The cubic root of 3658564220 is about 1540.8850003941.

The spelling of 3658564220 in words is "three billion, six hundred fifty-eight million, five hundred sixty-four thousand, two hundred twenty".