7506644 has 12 divisors (see below), whose sum is σ = 13156500. Its totient is φ = 3747648.

The previous prime is 7506637. The next prime is 7506647. The reversal of 7506644 is 4466057.

It can be written as a sum of positive squares in 2 ways, for example, as 6959044 + 547600 = 2638^2 + 740^2 .

It is an Ulam number.

It is a self number, because there is not a number n which added to its sum of digits gives 7506644.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7506647) 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 3 ways as a sum of consecutive naturals, for example, 3302 + ... + 5090.

It is an arithmetic number, because the mean of its divisors is an integer number (1096375).

Almost surely, 2^7506644 is an apocalyptic number.

It is an amenable number.

7506644 is a deficient number, since it is larger than the sum of its proper divisors (5649856).

7506644 is a wasteful number, since it uses less digits than its factorization.

7506644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2842 (or 2840 counting only the distinct ones).

The product of its (nonzero) digits is 20160, while the sum is 32.

The square root of 7506644 is about 2739.8255418913. The cubic root of 7506644 is about 195.8011658447.

The spelling of 7506644 in words is "seven million, five hundred six thousand, six hundred forty-four".