36644985 has 48 divisors (see below), whose sum is σ = 70294224. Its totient is φ = 17542656.

The previous prime is 36644953. The next prime is 36644989. The reversal of 36644985 is 58944663.

36644985 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 8 ways, for example, as 356409 + 36288576 = 597^2 + 6024^2 .

It is not a de Polignac number, because 36644985 - 2⁵ = 36644953 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 36644985.

It is not an unprimeable number, because it can be changed into a prime (36644989) 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 47 ways as a sum of consecutive naturals, for example, 20799 + ... + 22491.

It is an arithmetic number, because the mean of its divisors is an integer number (1464463).

Almost surely, 2^36644985 is an apocalyptic number.

It is an amenable number.

36644985 is a deficient number, since it is larger than the sum of its proper divisors (33649239).

36644985 is a wasteful number, since it uses less digits than its factorization.

36644985 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1754 (or 1751 counting only the distinct ones).

The product of its digits is 622080, while the sum is 45.

The square root of 36644985 is about 6053.5101387542. The cubic root of 36644985 is about 332.1530026136.

It can be divided in two parts, 3664 and 4985, that added together give a square (8649 = 93²).

The spelling of 36644985 in words is "thirty-six million, six hundred forty-four thousand, nine hundred eighty-five".