7538665 has 8 divisors (see below), whose sum is σ = 9112320. Its totient is φ = 5986992.

The previous prime is 7538651. The next prime is 7538683. The reversal of 7538665 is 5668357.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 7538665 - 2¹⁹ = 7014377 is a prime.

7538665 is a lucky number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 4729 + ... + 6118.

It is an arithmetic number, because the mean of its divisors is an integer number (1139040).

Almost surely, 2^7538665 is an apocalyptic number.

It is an amenable number.

7538665 is a deficient number, since it is larger than the sum of its proper divisors (1573655).

7538665 is a wasteful number, since it uses less digits than its factorization.

7538665 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10991.

The product of its digits is 151200, while the sum is 40.

The square root of 7538665 is about 2745.6629436258. The cubic root of 7538665 is about 196.0791797955.

The spelling of 7538665 in words is "seven million, five hundred thirty-eight thousand, six hundred sixty-five".