3646188 has 144 divisors (see below), whose sum is σ = 12065760. Its totient is φ = 943488.

The previous prime is 3646187. The next prime is 3646219. The reversal of 3646188 is 8816463.

It is a happy number.

3646188 is a `hidden beast` number, since 3 + 646 + 1 + 8 + 8 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (3646183) 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 47 ways as a sum of consecutive naturals, for example, 68770 + ... + 68822.

It is an arithmetic number, because the mean of its divisors is an integer number (83790).

Almost surely, 2^3646188 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 3646188, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (6032880).

3646188 is an abundant number, since it is smaller than the sum of its proper divisors (8419572).

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

3646188 is a wasteful number, since it uses less digits than its factorization.

3646188 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 93 (or 78 counting only the distinct ones).

The product of its digits is 27648, while the sum is 36.

The square root of 3646188 is about 1909.4994108404. The cubic root of 3646188 is about 153.9145531496.

The spelling of 3646188 in words is "three million, six hundred forty-six thousand, one hundred eighty-eight".