10681565 has 4 divisors (see below), whose sum is σ = 12817884. Its totient is φ = 8545248.

The previous prime is 10681529. The next prime is 10681571. The reversal of 10681565 is 56518601.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 2172676 + 8508889 = 1474^2 + 2917^2 .

It is a cyclic number.

It is not a de Polignac number, because 10681565 - 2¹⁶ = 10616029 is a prime.

It is a super-2 number, since 2×10681565² = 228191661698450, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1068152 + ... + 1068161.

It is an arithmetic number, because the mean of its divisors is an integer number (3204471).

Almost surely, 2^10681565 is an apocalyptic number.

It is an amenable number.

10681565 is a deficient number, since it is larger than the sum of its proper divisors (2136319).

10681565 is an equidigital number, since it uses as much as digits as its factorization.

10681565 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2136318.

The product of its (nonzero) digits is 7200, while the sum is 32.

The square root of 10681565 is about 3268.2663600141. The cubic root of 10681565 is about 220.2309214420.

The spelling of 10681565 in words is "ten million, six hundred eighty-one thousand, five hundred sixty-five".