654528 has 56 divisors (see below), whose sum is σ = 1983232. Its totient is φ = 186624.

The previous prime is 654527. The next prime is 654529. The reversal of 654528 is 825456.

654528 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (654527) and next prime (654529).

It is a tau number, because it is divible by the number of its divisors (56).

It is a junction number, because it is equal to n+sod(n) for n = 654495 and 654504.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 654528.

It is not an unprimeable number, because it can be changed into a prime (654527) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1101 + ... + 1587.

2⁶⁵⁴⁵²⁸ 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 654528, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (991616).

654528 is an abundant number, since it is smaller than the sum of its proper divisors (1328704).

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

654528 is a wasteful number, since it uses less digits than its factorization.

654528 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 509 (or 499 counting only the distinct ones).

The product of its digits is 9600, while the sum is 30.

The square root of 654528 is about 809.0290476862. The cubic root of 654528 is about 86.8245904265.

Adding to 654528 its product of digits (9600), we get a triangular number (664128 = T₁₁₅₂).

The spelling of 654528 in words is "six hundred fifty-four thousand, five hundred twenty-eight".