9725644 has 24 divisors (see below), whose sum is σ = 18171440. Its totient is φ = 4541184.

The previous prime is 9725641. The next prime is 9725647. The reversal of 9725644 is 4465279.

It is an interprime number because it is at equal distance from previous prime (9725641) and next prime (9725647).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9725641) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 4672 + ... + 6424.

Almost surely, 2^9725644 is an apocalyptic number.

It is an amenable number.

9725644 is a deficient number, since it is larger than the sum of its proper divisors (8445796).

9725644 is a wasteful number, since it uses less digits than its factorization.

9725644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1849 (or 1847 counting only the distinct ones).

The product of its digits is 60480, while the sum is 37.

The square root of 9725644 is about 3118.5964791874. The cubic root of 9725644 is about 213.4548970790.

The spelling of 9725644 in words is "nine million, seven hundred twenty-five thousand, six hundred forty-four".