9663725 has 6 divisors (see below), whose sum is σ = 11983050. Its totient is φ = 7730960.

The previous prime is 9663721. The next prime is 9663727. The reversal of 9663725 is 5273669.

It can be written as a sum of positive squares in 3 ways, for example, as 47524 + 9616201 = 218^2 + 3101^2 .

It is not a de Polignac number, because 9663725 - 2² = 9663721 is a prime.

It is an Ulam number.

It is a zygodrome in base 11.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9663721) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 193250 + ... + 193299.

It is an arithmetic number, because the mean of its divisors is an integer number (1997175).

Almost surely, 2^9663725 is an apocalyptic number.

It is an amenable number.

9663725 is a deficient number, since it is larger than the sum of its proper divisors (2319325).

9663725 is a wasteful number, since it uses less digits than its factorization.

9663725 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 386559 (or 386554 counting only the distinct ones).

The product of its digits is 68040, while the sum is 38.

The square root of 9663725 is about 3108.6532453781. The cubic root of 9663725 is about 213.0009404324. Note that the first 3 decimals are identical.

The spelling of 9663725 in words is "nine million, six hundred sixty-three thousand, seven hundred twenty-five".