3643326 has 64 divisors (see below), whose sum is σ = 8812800. Its totient is φ = 1111968.

The previous prime is 3643303. The next prime is 3643331. The reversal of 3643326 is 6233463.

It is a Harshad number since it is a multiple of its sum of digits (27).

Its product of digits (7776) is a multiple of the sum of its prime divisors (144).

It is a self number, because there is not a number n which added to its sum of digits gives 3643326.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 54345 + ... + 54411.

It is an arithmetic number, because the mean of its divisors is an integer number (137700).

Almost surely, 2^3643326 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 3643326, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4406400).

3643326 is an abundant number, since it is smaller than the sum of its proper divisors (5169474).

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

3643326 is a wasteful number, since it uses less digits than its factorization.

3643326 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 150 (or 144 counting only the distinct ones).

The product of its digits is 7776, while the sum is 27.

The square root of 3643326 is about 1908.7498526523. The cubic root of 3643326 is about 153.8742719247.

Adding to 3643326 its reverse (6233463), we get a palindrome (9876789).

It can be divided in two parts, 3643 and 326, that added together give a square (3969 = 63²).

The spelling of 3643326 in words is "three million, six hundred forty-three thousand, three hundred twenty-six".