9631645 has 4 divisors (see below), whose sum is σ = 11557980. Its totient is φ = 7705312.

The previous prime is 9631627. The next prime is 9631649. The reversal of 9631645 is 5461369.

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 5968249 + 3663396 = 2443^2 + 1914^2 .

It is a cyclic number.

It is not a de Polignac number, because 9631645 - 2¹⁵ = 9598877 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 9631645.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9631649) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 963160 + ... + 963169.

It is an arithmetic number, because the mean of its divisors is an integer number (2889495).

Almost surely, 2^9631645 is an apocalyptic number.

It is an amenable number.

9631645 is a deficient number, since it is larger than the sum of its proper divisors (1926335).

9631645 is a wasteful number, since it uses less digits than its factorization.

9631645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1926334.

The product of its digits is 19440, while the sum is 34.

The square root of 9631645 is about 3103.4891654394. The cubic root of 9631645 is about 212.7649843101.

The spelling of 9631645 in words is "nine million, six hundred thirty-one thousand, six hundred forty-five".