9865537 has 4 divisors (see below), whose sum is σ = 10762416. Its totient is φ = 8968660.

The previous prime is 9865529. The next prime is 9865547. The reversal of 9865537 is 7355689.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 7355689 = 11 ⋅668699.

It is a cyclic number.

It is not a de Polignac number, because 9865537 - 2³ = 9865529 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 9865493 and 9865502.

It is not an unprimeable number, because it can be changed into a prime (9865517) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 448423 + ... + 448444.

It is an arithmetic number, because the mean of its divisors is an integer number (2690604).

Almost surely, 2^9865537 is an apocalyptic number.

It is an amenable number.

9865537 is a deficient number, since it is larger than the sum of its proper divisors (896879).

9865537 is a wasteful number, since it uses less digits than its factorization.

9865537 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 896878.

The product of its digits is 226800, while the sum is 43.

The square root of 9865537 is about 3140.9452398920. The cubic root of 9865537 is about 214.4734691152.

The spelling of 9865537 in words is "nine million, eight hundred sixty-five thousand, five hundred thirty-seven".