10865609 has 2 divisors, whose sum is σ = 10865610. Its totient is φ = 10865608.

The previous prime is 10865557. The next prime is 10865629. The reversal of 10865609 is 90656801.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 9859600 + 1006009 = 3140^2 + 1003^2 .

It is a cyclic number.

It is not a de Polignac number, because 10865609 - 2⁸ = 10865353 is a prime.

It is a super-2 number, since 2×10865609² = 236122917881762, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (10865629) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5432804 + 5432805.

It is an arithmetic number, because the mean of its divisors is an integer number (5432805).

Almost surely, 2^10865609 is an apocalyptic number.

It is an amenable number.

10865609 is a deficient number, since it is larger than the sum of its proper divisors (1).

10865609 is an equidigital number, since it uses as much as digits as its factorization.

10865609 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 12960, while the sum is 35.

The square root of 10865609 is about 3296.3023222999. The cubic root of 10865609 is about 221.4885895876.

The spelling of 10865609 in words is "ten million, eight hundred sixty-five thousand, six hundred nine".