3640326 has 8 divisors (see below), whose sum is σ = 7280664. Its totient is φ = 1213440.

The previous prime is 3640309. The next prime is 3640327. The reversal of 3640326 is 6230463.

It is a sphenic number, since it is the product of 3 distinct primes.

3640326 is an admirable number.

It is a junction number, because it is equal to n+sod(n) for n = 3640296 and 3640305.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3640327) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 303355 + ... + 303366.

It is an arithmetic number, because the mean of its divisors is an integer number (910083).

Almost surely, 2^3640326 is an apocalyptic number.

3640326 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

3640326 is a wasteful number, since it uses less digits than its factorization.

3640326 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 606726.

The product of its (nonzero) digits is 2592, while the sum is 24.

The square root of 3640326 is about 1907.9638361353. The cubic root of 3640326 is about 153.8320257667.

Adding to 3640326 its reverse (6230463), we get a palindrome (9870789).

The spelling of 3640326 in words is "three million, six hundred forty thousand, three hundred twenty-six".