36643444 has 12 divisors (see below), whose sum is σ = 64402884. Its totient is φ = 18242624.

The previous prime is 36643441. The next prime is 36643469. The reversal of 36643444 is 44434663.

It can be written as a sum of positive squares in 2 ways, for example, as 19254544 + 17388900 = 4388^2 + 4170^2 .

It is a super-2 number, since 2×36643444² = 2685483976362272, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (36643441) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18727 + ... + 20590.

It is an arithmetic number, because the mean of its divisors is an integer number (5366907).

Almost surely, 2^36643444 is an apocalyptic number.

It is an amenable number.

36643444 is a deficient number, since it is larger than the sum of its proper divisors (27759440).

36643444 is a wasteful number, since it uses less digits than its factorization.

36643444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39554 (or 39552 counting only the distinct ones).

The product of its digits is 82944, while the sum is 34.

The square root of 36643444 is about 6053.3828558914. The cubic root of 36643444 is about 332.1483466336.

The spelling of 36643444 in words is "thirty-six million, six hundred forty-three thousand, four hundred forty-four".