3657648 has 40 divisors (see below), whose sum is σ = 9523696. Its totient is φ = 1209600.

The previous prime is 3657637. The next prime is 3657649. The reversal of 3657648 is 8467563.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3657649) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8478 + ... + 8898.

Almost surely, 2^3657648 is an apocalyptic number.

It is an amenable number.

3657648 is an abundant number, since it is smaller than the sum of its proper divisors (5866048).

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

3657648 is a wasteful number, since it uses less digits than its factorization.

3657648 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 613 (or 607 counting only the distinct ones).

The product of its digits is 120960, while the sum is 39.

The square root of 3657648 is about 1912.4978431360. The cubic root of 3657648 is about 154.0756360903.

The spelling of 3657648 in words is "three million, six hundred fifty-seven thousand, six hundred forty-eight".