9967765 has 4 divisors (see below), whose sum is σ = 11961324. Its totient is φ = 7974208.

The previous prime is 9967759. The next prime is 9967777. The reversal of 9967765 is 5677699.

9967765 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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 5276209 + 4691556 = 2297^2 + 2166^2 .

It is a cyclic number.

It is not a de Polignac number, because 9967765 - 2¹¹ = 9965717 is a prime.

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, 996772 + ... + 996781.

It is an arithmetic number, because the mean of its divisors is an integer number (2990331).

Almost surely, 2^9967765 is an apocalyptic number.

It is an amenable number.

9967765 is a deficient number, since it is larger than the sum of its proper divisors (1993559).

9967765 is a wasteful number, since it uses less digits than its factorization.

9967765 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1993558.

The product of its digits is 714420, while the sum is 49.

The square root of 9967765 is about 3157.1767451316. The cubic root of 9967765 is about 215.2117258090.

The spelling of 9967765 in words is "nine million, nine hundred sixty-seven thousand, seven hundred sixty-five".