9749665 has 4 divisors (see below), whose sum is σ = 11699604. Its totient is φ = 7799728.

The previous prime is 9749647. The next prime is 9749681. The reversal of 9749665 is 5669479.

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 1948816 + 7800849 = 1396^2 + 2793^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-9749665 is a prime.

It is a super-2 number, since 2×9749665² = 190111935224450, which contains 22 as substring.

It is a Duffinian number.

9749665 is a lucky 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, 974962 + ... + 974971.

It is an arithmetic number, because the mean of its divisors is an integer number (2924901).

Almost surely, 2^9749665 is an apocalyptic number.

It is an amenable number.

9749665 is a deficient number, since it is larger than the sum of its proper divisors (1949939).

9749665 is a wasteful number, since it uses less digits than its factorization.

9749665 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1949938.

The product of its digits is 408240, while the sum is 46.

The square root of 9749665 is about 3122.4453558069. The cubic root of 9749665 is about 213.6304873207.

The spelling of 9749665 in words is "nine million, seven hundred forty-nine thousand, six hundred sixty-five".