3784687 has 2 divisors, whose sum is σ = 3784688. Its totient is φ = 3784686.

The previous prime is 3784657. The next prime is 3784691. The reversal of 3784687 is 7864873.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 3784687 - 2¹⁵ = 3751919 is a prime.

It is an Ulam number.

3784687 is a lucky number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3784657) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1892343 + 1892344.

It is an arithmetic number, because the mean of its divisors is an integer number (1892344).

Almost surely, 2^3784687 is an apocalyptic number.

3784687 is a deficient number, since it is larger than the sum of its proper divisors (1).

3784687 is an equidigital number, since it uses as much as digits as its factorization.

3784687 is an evil number, because the sum of its binary digits is even.

The product of its digits is 225792, while the sum is 43.

The square root of 3784687 is about 1945.4272024417. The cubic root of 3784687 is about 155.8391806424.

The spelling of 3784687 in words is "three million, seven hundred eighty-four thousand, six hundred eighty-seven".