3636538 has 8 divisors (see below), whose sum is σ = 5775732. Its totient is φ = 1711296.

The previous prime is 3636527. The next prime is 3636539. The reversal of 3636538 is 8356363.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 3621409 + 15129 = 1903^2 + 123^2 .

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

It is a Harshad number since it is a multiple of its sum of digits (34), and also a Moran number because the ratio is a prime number: 106957 = 3636538 / (3 + 6 + 3 + 6 + 5 + 3 + 8).

It is an Ulam number.

It is not an unprimeable number, because it can be changed into a prime (3636539) 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, 53445 + ... + 53512.

Almost surely, 2^3636538 is an apocalyptic number.

3636538 is a deficient number, since it is larger than the sum of its proper divisors (2139194).

3636538 is a wasteful number, since it uses less digits than its factorization.

3636538 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 106976.

The product of its digits is 38880, while the sum is 34.

The square root of 3636538 is about 1906.9708964743. The cubic root of 3636538 is about 153.7786497826.

The spelling of 3636538 in words is "three million, six hundred thirty-six thousand, five hundred thirty-eight".