3639896 has 32 divisors (see below), whose sum is σ = 7593600. Its totient is φ = 1624320.

The previous prime is 3639869. The next prime is 3639913. The reversal of 3639896 is 6989363.

3639896 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2660 + ... + 3788.

It is an arithmetic number, because the mean of its divisors is an integer number (237300).

Almost surely, 2^3639896 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 3639896, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3796800).

3639896 is an abundant number, since it is smaller than the sum of its proper divisors (3953704).

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

3639896 is a wasteful number, since it uses less digits than its factorization.

3639896 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1179 (or 1175 counting only the distinct ones).

The product of its digits is 209952, while the sum is 44.

The square root of 3639896 is about 1907.8511472335. The cubic root of 3639896 is about 153.8259685825.

The spelling of 3639896 in words is "three million, six hundred thirty-nine thousand, eight hundred ninety-six".