6665493 has 16 divisors (see below), whose sum is σ = 9305856. Its totient is φ = 4239360.

The previous prime is 6665437. The next prime is 6665497. The reversal of 6665493 is 3945666.

It is a happy number.

It is not a de Polignac number, because 6665493 - 2⁸ = 6665237 is a prime.

It is a Curzon number.

6665493 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6665497) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5205 + ... + 6357.

It is an arithmetic number, because the mean of its divisors is an integer number (581616).

Almost surely, 2^6665493 is an apocalyptic number.

It is an amenable number.

6665493 is a deficient number, since it is larger than the sum of its proper divisors (2640363).

6665493 is a wasteful number, since it uses less digits than its factorization.

6665493 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1244.

The product of its digits is 116640, while the sum is 39.

The square root of 6665493 is about 2581.7616078949. The cubic root of 6665493 is about 188.1961605018.

The spelling of 6665493 in words is "six million, six hundred sixty-five thousand, four hundred ninety-three".