3784691 has 2 divisors, whose sum is σ = 3784692. Its totient is φ = 3784690.

The previous prime is 3784687. The next prime is 3784723. The reversal of 3784691 is 1964873.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 3784691 - 2² = 3784687 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (3784631) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1892345 + 1892346.

It is an arithmetic number, because the mean of its divisors is an integer number (1892346).

Almost surely, 2^3784691 is an apocalyptic number.

3784691 is a deficient number, since it is larger than the sum of its proper divisors (1).

3784691 is an equidigital number, since it uses as much as digits as its factorization.

3784691 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 36288, while the sum is 38.

The square root of 3784691 is about 1945.4282304932. The cubic root of 3784691 is about 155.8392355440.

The spelling of 3784691 in words is "three million, seven hundred eighty-four thousand, six hundred ninety-one".