3784664 has 32 divisors (see below), whose sum is σ = 7724640. Its totient is φ = 1728000.

The previous prime is 3784657. The next prime is 3784687. The reversal of 3784664 is 4664873.

It is a happy number.

It is a d-powerful number, because it can be written as 3⁸ + 7 + 8⁷ + 4² + 6⁴ + 6⁸ + 4² .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15584 + ... + 15824.

It is an arithmetic number, because the mean of its divisors is an integer number (241395).

Almost surely, 2^3784664 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 3784664, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3862320).

3784664 is an abundant number, since it is smaller than the sum of its proper divisors (3939976).

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

3784664 is a wasteful number, since it uses less digits than its factorization.

3784664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 411 (or 407 counting only the distinct ones).

The product of its digits is 96768, while the sum is 38.

The square root of 3784664 is about 1945.4212911346. The cubic root of 3784664 is about 155.8388649572.

The spelling of 3784664 in words is "three million, seven hundred eighty-four thousand, six hundred sixty-four".