544664520 has 128 divisors (see below), whose sum is σ = 1832025600. Its totient is φ = 143926272.

The previous prime is 544664503. The next prime is 544664521. The reversal of 544664520 is 25466445.

544664520 is a `hidden beast` number, since 5 + 4 + 4 + 6 + 645 + 2 + 0 = 666.

544664520 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (544664521) 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, 119809 + ... + 124271.

It is an arithmetic number, because the mean of its divisors is an integer number (14312700).

Almost surely, 2^544664520 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 544664520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (916012800).

544664520 is an abundant number, since it is smaller than the sum of its proper divisors (1287361080).

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

544664520 is a wasteful number, since it uses less digits than its factorization.

544664520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4596 (or 4586 counting only the distinct ones).

The product of its (nonzero) digits is 115200, while the sum is 36.

The square root of 544664520 is about 23338.0487616253. The cubic root of 544664520 is about 816.6632799156.

The spelling of 544664520 in words is "five hundred forty-four million, six hundred sixty-four thousand, five hundred twenty".