3646643336 has 64 divisors (see below), whose sum is σ = 8284462080. Its totient is φ = 1471530240.

The previous prime is 3646643333. The next prime is 3646643339. The reversal of 3646643336 is 6333466463.

3646643336 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (3646643333) and next prime (3646643339).

It is not an unprimeable number, because it can be changed into a prime (3646643333) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 35846 + ... + 92618.

It is an arithmetic number, because the mean of its divisors is an integer number (129444720).

Almost surely, 2^3646643336 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 3646643336, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4142231040).

3646643336 is an abundant number, since it is smaller than the sum of its proper divisors (4637818744).

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

3646643336 is a wasteful number, since it uses less digits than its factorization.

3646643336 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56854 (or 56850 counting only the distinct ones).

The product of its digits is 1679616, while the sum is 44.

The square root of 3646643336 is about 60387.4435292636. The cubic root of 3646643336 is about 1539.2095983329.

The spelling of 3646643336 in words is "three billion, six hundred forty-six million, six hundred forty-three thousand, three hundred thirty-six".