3605812 has 18 divisors (see below), whose sum is σ = 7340802. Its totient is φ = 1545264.

The previous prime is 3605809. The next prime is 3605813. The reversal of 3605812 is 2185063.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 3519376 + 86436 = 1876^2 + 294^2 .

It is a nialpdrome in base 13.

It is a zygodrome in base 13.

It is a congruent number.

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

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 9003 + ... + 9394.

Almost surely, 2^3605812 is an apocalyptic number.

It is an amenable number.

3605812 is an abundant number, since it is smaller than the sum of its proper divisors (3734990).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

3605812 is a wasteful number, since it uses less digits than its factorization.

3605812 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18415 (or 18406 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 25.

The square root of 3605812 is about 1898.8975749102. The cubic root of 3605812 is about 153.3443197337.

The spelling of 3605812 in words is "three million, six hundred five thousand, eight hundred twelve".