6665535 has 12 divisors (see below), whose sum is σ = 11553672. Its totient is φ = 3554928.

The previous prime is 6665497. The next prime is 6665537. The reversal of 6665535 is 5355666.

It is a happy number.

It is not a de Polignac number, because 6665535 - 2¹¹ = 6663487 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 6665535.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6665537) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 74017 + ... + 74106.

It is an arithmetic number, because the mean of its divisors is an integer number (962806).

Almost surely, 2^6665535 is an apocalyptic number.

6665535 is a deficient number, since it is larger than the sum of its proper divisors (4888137).

6665535 is a wasteful number, since it uses less digits than its factorization.

6665535 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 148134 (or 148131 counting only the distinct ones).

The product of its digits is 81000, while the sum is 36.

The square root of 6665535 is about 2581.7697418631. The cubic root of 6665535 is about 188.1965557825.

The spelling of 6665535 in words is "six million, six hundred sixty-five thousand, five hundred thirty-five".