3661630 has 48 divisors (see below), whose sum is σ = 8045856. Its totient is φ = 1175040.

The previous prime is 3661601. The next prime is 3661633. The reversal of 3661630 is 361663.

3661630 = T₅₈₀ + T₅₈₁ + ... + T₆₀₀.

It is a junction number, because it is equal to n+sod(n) for n = 3661595 and 3661604.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3661633) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 20140 + ... + 20320.

It is an arithmetic number, because the mean of its divisors is an integer number (167622).

Almost surely, 2^3661630 is an apocalyptic number.

3661630 is an abundant number, since it is smaller than the sum of its proper divisors (4384226).

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

3661630 is a wasteful number, since it uses less digits than its factorization.

3661630 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 229 (or 212 counting only the distinct ones).

The product of its (nonzero) digits is 1944, while the sum is 25.

The square root of 3661630 is about 1913.5386068747. The cubic root of 3661630 is about 154.1315287178.

The spelling of 3661630 in words is "three million, six hundred sixty-one thousand, six hundred thirty".