3784521 has 8 divisors (see below), whose sum is σ = 5434240. Its totient is φ = 2328912.

The previous prime is 3784519. The next prime is 3784531. The reversal of 3784521 is 1254873.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 3784521 - 2¹ = 3784519 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (3784531) 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, 48481 + ... + 48558.

It is an arithmetic number, because the mean of its divisors is an integer number (679280).

Almost surely, 2^3784521 is an apocalyptic number.

It is an amenable number.

3784521 is a deficient number, since it is larger than the sum of its proper divisors (1649719).

3784521 is a wasteful number, since it uses less digits than its factorization.

3784521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 97055.

The product of its digits is 6720, while the sum is 30.

The square root of 3784521 is about 1945.3845378228. The cubic root of 3784521 is about 155.8369021904.

The spelling of 3784521 in words is "three million, seven hundred eighty-four thousand, five hundred twenty-one".