3658648 has 32 divisors (see below), whose sum is σ = 7948800. Its totient is φ = 1546272.

The previous prime is 3658639. The next prime is 3658661. The reversal of 3658648 is 8468563.

It is a self number, because there is not a number n which added to its sum of digits gives 3658648.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4011 + ... + 4837.

It is an arithmetic number, because the mean of its divisors is an integer number (248400).

Almost surely, 2^3658648 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 3658648, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3974400).

3658648 is an abundant number, since it is smaller than the sum of its proper divisors (4290152).

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

3658648 is a wasteful number, since it uses less digits than its factorization.

3658648 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 919 (or 915 counting only the distinct ones).

The product of its digits is 138240, while the sum is 40.

The square root of 3658648 is about 1912.7592634725. The cubic root of 3658648 is about 154.0896762236.

The spelling of 3658648 in words is "three million, six hundred fifty-eight thousand, six hundred forty-eight".