5645722220 has 24 divisors (see below), whose sum is σ = 11909192064. Its totient is φ = 2248160256.

The previous prime is 5645722217. The next prime is 5645722241. The reversal of 5645722220 is 222275465.

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, 628469 + ... + 637388.

It is an arithmetic number, because the mean of its divisors is an integer number (496216336).

Almost surely, 2^5645722220 is an apocalyptic number.

It is an amenable number.

5645722220 is an abundant number, since it is smaller than the sum of its proper divisors (6263469844).

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

5645722220 is a wasteful number, since it uses less digits than its factorization.

5645722220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1266089 (or 1266087 counting only the distinct ones).

The product of its (nonzero) digits is 67200, while the sum is 35.

The square root of 5645722220 is about 75138.0211344430. The cubic root of 5645722220 is about 1780.6278789036.

Adding to 5645722220 its reverse (222275465), we get a palindrome (5867997685).

The spelling of 5645722220 in words is "five billion, six hundred forty-five million, seven hundred twenty-two thousand, two hundred twenty".