109636 has 6 divisors (see below), whose sum is σ = 191870. Its totient is φ = 54816.

The previous prime is 109621. The next prime is 109639. The reversal of 109636 is 636901.

It can be written as a sum of positive squares in only one way, i.e., 65536 + 44100 = 256^2 + 210^2 .

It is an alternating number because its digits alternate between odd and even.

It is a self number, because there is not a number n which added to its sum of digits gives 109636.

It is not an unprimeable number, because it can be changed into a prime (109639) 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, 13701 + ... + 13708.

2¹⁰⁹⁶³⁶ is an apocalyptic number.

It is an amenable number.

109636 is a deficient number, since it is larger than the sum of its proper divisors (82234).

109636 is a wasteful number, since it uses less digits than its factorization.

109636 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27413 (or 27411 counting only the distinct ones).

The product of its (nonzero) digits is 972, while the sum is 25.

The square root of 109636 is about 331.1132736693. The cubic root of 109636 is about 47.8612893542.

The spelling of 109636 in words is "one hundred nine thousand, six hundred thirty-six".