9722605 has 4 divisors (see below), whose sum is σ = 11667132. Its totient is φ = 7778080.

The previous prime is 9722599. The next prime is 9722611. The reversal of 9722605 is 5062279.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (9722599) and next prime (9722611).

It can be written as a sum of positive squares in 2 ways, for example, as 4691556 + 5031049 = 2166^2 + 2243^2 .

It is not a de Polignac number, because 9722605 - 2³ = 9722597 is a prime.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

9722605 is a lucky number.

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 3 ways as a sum of consecutive naturals, for example, 972256 + ... + 972265.

It is an arithmetic number, because the mean of its divisors is an integer number (2916783).

Almost surely, 2^9722605 is an apocalyptic number.

It is an amenable number.

9722605 is a deficient number, since it is larger than the sum of its proper divisors (1944527).

9722605 is a wasteful number, since it uses less digits than its factorization.

9722605 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1944526.

The product of its (nonzero) digits is 7560, while the sum is 31.

The square root of 9722605 is about 3118.1092027060. The cubic root of 9722605 is about 213.4326618073.

The spelling of 9722605 in words is "nine million, seven hundred twenty-two thousand, six hundred five".