36684009 has 14 divisors (see below), whose sum is σ = 55001946. Its totient is φ = 24455520.

The previous prime is 36684007. The next prime is 36684019. The reversal of 36684009 is 90048663.

36684009 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 33698025 + 2985984 = 5805^2 + 1728^2 .

It is not a de Polignac number, because 36684009 - 2¹ = 36684007 is a prime.

It is not an unprimeable number, because it can be changed into a prime (36684001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 13 ways as a sum of consecutive naturals, for example, 24432 + ... + 25889.

Almost surely, 2^36684009 is an apocalyptic number.

It is an amenable number.

36684009 is a deficient number, since it is larger than the sum of its proper divisors (18317937).

36684009 is an frugal number, since it uses more digits than its factorization.

36684009 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50339 (or 50324 counting only the distinct ones).

The product of its (nonzero) digits is 31104, while the sum is 36.

The square root of 36684009 is about 6056.7325349565. The cubic root of 36684009 is about 332.2708663118.

The spelling of 36684009 in words is "thirty-six million, six hundred eighty-four thousand, nine".