10066565 has 4 divisors (see below), whose sum is σ = 12079884. Its totient is φ = 8053248.

The previous prime is 10066559. The next prime is 10066577. The reversal of 10066565 is 56566001.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 56566001 = 157 ⋅360293.

It can be written as a sum of positive squares in 2 ways, for example, as 1592644 + 8473921 = 1262^2 + 2911^2 .

It is a cyclic number.

It is not a de Polignac number, because 10066565 - 2¹² = 10062469 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

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, 1006652 + ... + 1006661.

It is an arithmetic number, because the mean of its divisors is an integer number (3019971).

Almost surely, 2^10066565 is an apocalyptic number.

It is an amenable number.

10066565 is a deficient number, since it is larger than the sum of its proper divisors (2013319).

10066565 is an equidigital number, since it uses as much as digits as its factorization.

10066565 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2013318.

The product of its (nonzero) digits is 5400, while the sum is 29.

The square root of 10066565 is about 3172.7850541756. The cubic root of 10066565 is about 215.9204453829.

The spelling of 10066565 in words is "ten million, sixty-six thousand, five hundred sixty-five".