6666265 has 4 divisors (see below), whose sum is σ = 7999524. Its totient is φ = 5333008.

The previous prime is 6666241. The next prime is 6666269. The reversal of 6666265 is 5626666.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5626666 = 2 ⋅2813333.

It can be written as a sum of positive squares in 2 ways, for example, as 5035536 + 1630729 = 2244^2 + 1277^2 .

It is a cyclic number.

It is not a de Polignac number, because 6666265 - 2⁷ = 6666137 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6666269) 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 in 3 ways as a sum of consecutive naturals, for example, 666622 + ... + 666631.

It is an arithmetic number, because the mean of its divisors is an integer number (1999881).

Almost surely, 2^6666265 is an apocalyptic number.

It is an amenable number.

6666265 is a deficient number, since it is larger than the sum of its proper divisors (1333259).

6666265 is a wasteful number, since it uses less digits than its factorization.

6666265 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1333258.

The product of its digits is 77760, while the sum is 37.

The square root of 6666265 is about 2581.9111138844. The cubic root of 6666265 is about 188.2034258722.

The spelling of 6666265 in words is "six million, six hundred sixty-six thousand, two hundred sixty-five".