36643445 has 8 divisors (see below), whose sum is σ = 44574936. Its totient is φ = 28912896.

The previous prime is 36643441. The next prime is 36643469. The reversal of 36643445 is 54434663.

36643445 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 4 ways, for example, as 4301476 + 32341969 = 2074^2 + 5687^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 36643445 - 2² = 36643441 is a prime.

It is a super-2 number, since 2×36643445² = 2685484122936050, which contains 22 as substring.

It is a Duffinian number.

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

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 49832 + ... + 50561.

It is an arithmetic number, because the mean of its divisors is an integer number (5571867).

Almost surely, 2^36643445 is an apocalyptic number.

It is an amenable number.

36643445 is a deficient number, since it is larger than the sum of its proper divisors (7931491).

36643445 is a wasteful number, since it uses less digits than its factorization.

36643445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 100471.

The product of its digits is 103680, while the sum is 35.

The square root of 36643445 is about 6053.3829384898. The cubic root of 36643445 is about 332.1483496551.

The spelling of 36643445 in words is "thirty-six million, six hundred forty-three thousand, four hundred forty-five".