6528740 has 12 divisors (see below), whose sum is σ = 13710396. Its totient is φ = 2611488.

The previous prime is 6528737. The next prime is 6528749. The reversal of 6528740 is 478256.

It can be written as a sum of positive squares in 2 ways, for example, as 1582564 + 4946176 = 1258^2 + 2224^2 .

It is a hoax number, since the sum of its digits (32) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 6528697 and 6528706.

It is not an unprimeable number, because it can be changed into a prime (6528749) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 163199 + ... + 163238.

It is an arithmetic number, because the mean of its divisors is an integer number (1142533).

Almost surely, 2^6528740 is an apocalyptic number.

It is an amenable number.

6528740 is an abundant number, since it is smaller than the sum of its proper divisors (7181656).

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

6528740 is a wasteful number, since it uses less digits than its factorization.

6528740 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 326446 (or 326444 counting only the distinct ones).

The product of its (nonzero) digits is 13440, while the sum is 32.

The square root of 6528740 is about 2555.1399178910. The cubic root of 6528740 is about 186.9002108021.

The spelling of 6528740 in words is "six million, five hundred twenty-eight thousand, seven hundred forty".