220341564 has 72 divisors (see below), whose sum is σ = 592274592. Its totient is φ = 68914560.

The previous prime is 220341557. The next prime is 220341581. The reversal of 220341564 is 465143022.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 41374 + ... + 46394.

It is an arithmetic number, because the mean of its divisors is an integer number (8226036).

Almost surely, 2^220341564 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 220341564, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (296137296).

220341564 is an abundant number, since it is smaller than the sum of its proper divisors (371933028).

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

220341564 is a wasteful number, since it uses less digits than its factorization.

220341564 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5107 (or 5102 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 27.

The square root of 220341564 is about 14843.9066286473. The cubic root of 220341564 is about 603.9933298972.

Adding to 220341564 its reverse (465143022), we get a palindrome (685484586).

The spelling of 220341564 in words is "two hundred twenty million, three hundred forty-one thousand, five hundred sixty-four".