9725766 has 8 divisors (see below), whose sum is σ = 19451544. Its totient is φ = 3241920.

The previous prime is 9725753. The next prime is 9725801. The reversal of 9725766 is 6675279.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

9725766 is an admirable number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 810475 + ... + 810486.

It is an arithmetic number, because the mean of its divisors is an integer number (2431443).

Almost surely, 2^9725766 is an apocalyptic number.

9725766 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

9725766 is a wasteful number, since it uses less digits than its factorization.

9725766 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1620966.

The product of its digits is 158760, while the sum is 42.

The square root of 9725766 is about 3118.6160392071. The cubic root of 9725766 is about 213.4557896125.

The spelling of 9725766 in words is "nine million, seven hundred twenty-five thousand, seven hundred sixty-six".