4564565720 has 128 divisors (see below), whose sum is σ = 12186780480. Its totient is φ = 1516800000.

The previous prime is 4564565689. The next prime is 4564565723. The reversal of 4564565720 is 275654654.

It is a Harshad number since it is a multiple of its sum of digits (44).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4564565723) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 573770 + ... + 581670.

Almost surely, 2^4564565720 is an apocalyptic number.

4564565720 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 4564565720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (6093390240).

4564565720 is an abundant number, since it is smaller than the sum of its proper divisors (7622214760).

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

4564565720 is a wasteful number, since it uses less digits than its factorization.

4564565720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8037 (or 8033 counting only the distinct ones).

The product of its (nonzero) digits is 1008000, while the sum is 44.

The square root of 4564565720 is about 67561.5698455860. The cubic root of 4564565720 is about 1658.8221334172.

The spelling of 4564565720 in words is "four billion, five hundred sixty-four million, five hundred sixty-five thousand, seven hundred twenty".