9745665 has 16 divisors (see below), whose sum is σ = 15850176. Its totient is φ = 5112000.

The previous prime is 9745663. The next prime is 9745669. The reversal of 9745665 is 5665479.

It is not a de Polignac number, because 9745665 - 2¹ = 9745663 is a prime.

It is a Curzon number.

9745665 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (9745661) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4411 + ... + 6240.

It is an arithmetic number, because the mean of its divisors is an integer number (990636).

Almost surely, 2^9745665 is an apocalyptic number.

It is an amenable number.

9745665 is a deficient number, since it is larger than the sum of its proper divisors (6104511).

9745665 is a wasteful number, since it uses less digits than its factorization.

9745665 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10720.

The product of its digits is 226800, while the sum is 42.

The square root of 9745665 is about 3121.8047664772. The cubic root of 9745665 is about 213.6012678950.

The spelling of 9745665 in words is "nine million, seven hundred forty-five thousand, six hundred sixty-five".