7138564 has 6 divisors (see below), whose sum is σ = 12492494. Its totient is φ = 3569280.

The previous prime is 7138561. The next prime is 7138577. The reversal of 7138564 is 4658317.

It can be written as a sum of positive squares in only one way, i.e., 3686400 + 3452164 = 1920^2 + 1858^2 .

It is not an unprimeable number, because it can be changed into a prime (7138561) 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 as a sum of consecutive naturals, namely, 892317 + ... + 892324.

Almost surely, 2^7138564 is an apocalyptic number.

It is an amenable number.

7138564 is a deficient number, since it is larger than the sum of its proper divisors (5353930).

7138564 is a wasteful number, since it uses less digits than its factorization.

7138564 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1784645 (or 1784643 counting only the distinct ones).

The product of its digits is 20160, while the sum is 34.

The square root of 7138564 is about 2671.8091249189. The cubic root of 7138564 is about 192.5470869239.

The spelling of 7138564 in words is "seven million, one hundred thirty-eight thousand, five hundred sixty-four".