6667865 has 8 divisors (see below), whose sum is σ = 8034120. Its totient is φ = 5312512.

The previous prime is 6667853. The next prime is 6667867. The reversal of 6667865 is 5687666.

6667865 is nontrivially palindromic in base 4.

It can be written as a sum of positive squares in 4 ways, for example, as 3474496 + 3193369 = 1864^2 + 1787^2 .

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 6667865 - 2¹⁰ = 6666841 is a prime.

It is not an unprimeable number, because it can be changed into a prime (6667867) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1310 + ... + 3879.

It is an arithmetic number, because the mean of its divisors is an integer number (1004265).

Almost surely, 2^6667865 is an apocalyptic number.

It is an amenable number.

6667865 is a deficient number, since it is larger than the sum of its proper divisors (1366255).

6667865 is a wasteful number, since it uses less digits than its factorization.

6667865 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5451.

The product of its digits is 362880, while the sum is 44.

The square root of 6667865 is about 2582.2209432967. The cubic root of 6667865 is about 188.2184818490.

The spelling of 6667865 in words is "six million, six hundred sixty-seven thousand, eight hundred sixty-five".