9651636 has 30 divisors (see below), whose sum is σ = 25232130. Its totient is φ = 3217104.

The previous prime is 9651611. The next prime is 9651637. The reversal of 9651636 is 6361569.

It can be written as a sum of positive squares in only one way, i.e., 5731236 + 3920400 = 2394^2 + 1980^2 .

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 9651636.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9651637) 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 9 ways as a sum of consecutive naturals, for example, 14571 + ... + 15218.

It is an arithmetic number, because the mean of its divisors is an integer number (841071).

Almost surely, 2^9651636 is an apocalyptic number.

It is an amenable number.

9651636 is an abundant number, since it is smaller than the sum of its proper divisors (15580494).

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

9651636 is a wasteful number, since it uses less digits than its factorization.

9651636 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29805 (or 29794 counting only the distinct ones).

The product of its digits is 29160, while the sum is 36.

The square root of 9651636 is about 3106.7082257592. The cubic root of 9651636 is about 212.9120843288.

It can be divided in two parts, 965 and 1636, that added together give a square (2601 = 51²).

The spelling of 9651636 in words is "nine million, six hundred fifty-one thousand, six hundred thirty-six".