7506540 has 48 divisors (see below), whose sum is σ = 23355360. Its totient is φ = 2001600.

The previous prime is 7506509. The next prime is 7506547. The reversal of 7506540 is 456057.

7506540 is a `hidden beast` number, since 7 + 5 + 0 + 654 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (7506547) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6411 + ... + 7490.

It is an arithmetic number, because the mean of its divisors is an integer number (486570).

Almost surely, 2^7506540 is an apocalyptic number.

It is an amenable number.

7506540 is an abundant number, since it is smaller than the sum of its proper divisors (15848820).

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

7506540 is a wasteful number, since it uses less digits than its factorization.

7506540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13919 (or 13911 counting only the distinct ones).

The product of its (nonzero) digits is 4200, while the sum is 27.

The square root of 7506540 is about 2739.8065625150. The cubic root of 7506540 is about 195.8002616050.

The spelling of 7506540 in words is "seven million, five hundred six thousand, five hundred forty".