36644 has 6 divisors (see below), whose sum is σ = 64134. Its totient is φ = 18320.

The previous prime is 36643. The next prime is 36653. The reversal of 36644 is 44663.

It can be written as a sum of positive squares in only one way, i.e., 28900 + 7744 = 170^2 + 88^2 .

It is a fibodiv number, since the Fibonacci-like sequence with seeds 36 and 644 contains 36644 itself.

It is a plaindrome in base 13 and base 15.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 36644.

It is not an unprimeable number, because it can be changed into a prime (36643) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4577 + ... + 4584.

It is an arithmetic number, because the mean of its divisors is an integer number (10689).

2³⁶⁶⁴⁴ is an apocalyptic number.

It is an amenable number.

36644 is a deficient number, since it is larger than the sum of its proper divisors (27490).

36644 is a wasteful number, since it uses less digits than its factorization.

36644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9165 (or 9163 counting only the distinct ones).

The product of its digits is 1728, while the sum is 23.

The square root of 36644 is about 191.4262259984. The cubic root of 36644 is about 33.2150026548.

The spelling of 36644 in words is "thirty-six thousand, six hundred forty-four".