3870648 has 24 divisors (see below), whose sum is σ = 10483200. Its totient is φ = 1290192.

The previous prime is 3870631. The next prime is 3870649. The reversal of 3870648 is 8460783.

3870648 is a `hidden beast` number, since 3 + 8 + 7 + 0 + 648 = 666.

It is a tau number, because it is divible by the number of its divisors (24).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3870649) by changing a digit.

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 5 ways as a sum of consecutive naturals, for example, 26808 + ... + 26951.

It is an arithmetic number, because the mean of its divisors is an integer number (436800).

Almost surely, 2^3870648 is an apocalyptic number.

It is an amenable number.

3870648 is an abundant number, since it is smaller than the sum of its proper divisors (6612552).

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

3870648 is a wasteful number, since it uses less digits than its factorization.

3870648 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53771 (or 53764 counting only the distinct ones).

The product of its (nonzero) digits is 32256, while the sum is 36.

The square root of 3870648 is about 1967.3962488528. The cubic root of 3870648 is about 157.0102093514.

The spelling of 3870648 in words is "three million, eight hundred seventy thousand, six hundred forty-eight".