6528645 has 24 divisors (see below), whose sum is σ = 11512800. Its totient is φ = 3421536.

The previous prime is 6528637. The next prime is 6528649. The reversal of 6528645 is 5468256.

6528645 is a `hidden beast` number, since 6 + 5 + 2 + 8 + 645 = 666.

It is not a de Polignac number, because 6528645 - 2³ = 6528637 is a prime.

It is a super-3 number, since 3×6528645³ (a number of 21 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6528649) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1426 + ... + 3884.

It is an arithmetic number, because the mean of its divisors is an integer number (479700).

Almost surely, 2^6528645 is an apocalyptic number.

It is an amenable number.

6528645 is a deficient number, since it is larger than the sum of its proper divisors (4984155).

6528645 is a wasteful number, since it uses less digits than its factorization.

6528645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2529 (or 2526 counting only the distinct ones).

The product of its digits is 57600, while the sum is 36.

The square root of 6528645 is about 2555.1213278434. The cubic root of 6528645 is about 186.8993042665.

The spelling of 6528645 in words is "six million, five hundred twenty-eight thousand, six hundred forty-five".