3605818 has 4 divisors (see below), whose sum is σ = 5408730. Its totient is φ = 1802908.

The previous prime is 3605813. The next prime is 3605821. The reversal of 3605818 is 8185063.

3605818 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 8185063 = 89 ⋅91967.

It can be written as a sum of positive squares in only one way, i.e., 2424249 + 1181569 = 1557^2 + 1087^2 .

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a self number, because there is not a number n which added to its sum of digits gives 3605818.

It is not an unprimeable number, because it can be changed into a prime (3605813) by changing a digit.

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 as a sum of consecutive naturals, namely, 901453 + ... + 901456.

Almost surely, 2^3605818 is an apocalyptic number.

3605818 is a deficient number, since it is larger than the sum of its proper divisors (1802912).

3605818 is a wasteful number, since it uses less digits than its factorization.

3605818 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1802911.

The product of its (nonzero) digits is 5760, while the sum is 31.

The square root of 3605818 is about 1898.8991547736. The cubic root of 3605818 is about 153.3444047876.

The spelling of 3605818 in words is "three million, six hundred five thousand, eight hundred eighteen".