36644004 has 18 divisors (see below), whose sum is σ = 92627990. Its totient is φ = 12214656.

The previous prime is 36643967. The next prime is 36644011. The reversal of 36644004 is 40044663.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 22581504 + 14062500 = 4752^2 + 3750^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is an unprimeable number.

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 5 ways as a sum of consecutive naturals, for example, 508909 + ... + 508980.

Almost surely, 2^36644004 is an apocalyptic number.

It is an amenable number.

36644004 is an abundant number, since it is smaller than the sum of its proper divisors (55983986).

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

36644004 is a wasteful number, since it uses less digits than its factorization.

36644004 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1017899 (or 1017894 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 27.

The square root of 36644004 is about 6053.4291108429. The cubic root of 36644004 is about 332.1500386337.

Adding to 36644004 its product of nonzero digits (6912), we get a square (36650916 = 6054²).

Adding to 36644004 its reverse (40044663), we get a palindrome (76688667).

The spelling of 36644004 in words is "thirty-six million, six hundred forty-four thousand, four".