6665416 has 8 divisors (see below), whose sum is σ = 12497670. Its totient is φ = 3332704.

The previous prime is 6665413. The next prime is 6665437. The reversal of 6665416 is 6145666.

It can be written as a sum of positive squares in only one way, i.e., 6604900 + 60516 = 2570^2 + 246^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is not an unprimeable number, because it can be changed into a prime (6665413) 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, 416581 + ... + 416596.

Almost surely, 2^6665416 is an apocalyptic number.

It is an amenable number.

6665416 is a deficient number, since it is larger than the sum of its proper divisors (5832254).

6665416 is a wasteful number, since it uses less digits than its factorization.

6665416 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 833183 (or 833179 counting only the distinct ones).

The product of its digits is 25920, while the sum is 34.

The square root of 6665416 is about 2581.7466955532. The cubic root of 6665416 is about 188.1954358162.

The spelling of 6665416 in words is "six million, six hundred sixty-five thousand, four hundred sixteen".