9866965 has 8 divisors (see below), whose sum is σ = 11866680. Its totient is φ = 7876032.

The previous prime is 9866951. The next prime is 9866981. The reversal of 9866965 is 5696689.

9866965 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 1240996 + 8625969 = 1114^2 + 2937^2 .

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 9866965 - 2¹⁷ = 9735893 is a prime.

It is a super-2 number, since 2×9866965² = 194713996622450, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

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 in 7 ways as a sum of consecutive naturals, for example, 607 + ... + 4483.

It is an arithmetic number, because the mean of its divisors is an integer number (1483335).

Almost surely, 2^9866965 is an apocalyptic number.

It is an amenable number.

9866965 is a deficient number, since it is larger than the sum of its proper divisors (1999715).

9866965 is a wasteful number, since it uses less digits than its factorization.

9866965 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4391.

The product of its digits is 699840, while the sum is 49.

The square root of 9866965 is about 3141.1725517711. The cubic root of 9866965 is about 214.4838166964.

The spelling of 9866965 in words is "nine million, eight hundred sixty-six thousand, nine hundred sixty-five".