9722689 has 4 divisors (see below), whose sum is σ = 9797040. Its totient is φ = 9648340.

The previous prime is 9722681. The next prime is 9722693. The reversal of 9722689 is 9862279.

It is a happy number.

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.

It is a cyclic number.

It is not a de Polignac number, because 9722689 - 2³ = 9722681 is a prime.

It is a Duffinian number.

9722689 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (9722681) 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, 36979 + ... + 37240.

It is an arithmetic number, because the mean of its divisors is an integer number (2449260).

Almost surely, 2^9722689 is an apocalyptic number.

It is an amenable number.

9722689 is a deficient number, since it is larger than the sum of its proper divisors (74351).

9722689 is a wasteful number, since it uses less digits than its factorization.

9722689 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 74350.

The product of its digits is 108864, while the sum is 43.

The square root of 9722689 is about 3118.1226723784. The cubic root of 9722689 is about 213.4332764674.

The spelling of 9722689 in words is "nine million, seven hundred twenty-two thousand, six hundred eighty-nine".