3783691 has 4 divisors (see below), whose sum is σ = 3840232. Its totient is φ = 3727152.

The previous prime is 3783677. The next prime is 3783697. The reversal of 3783691 is 1963873.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 3783691 - 2¹¹ = 3781643 is a prime.

It is a d-powerful number, because it can be written as 3² + 7³ + 8⁷ + 3⁸ + 6⁸ + 9 + 1 .

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 3783691.

It is not an unprimeable number, because it can be changed into a prime (3783697) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 28170 + ... + 28303.

It is an arithmetic number, because the mean of its divisors is an integer number (960058).

Almost surely, 2^3783691 is an apocalyptic number.

3783691 is a deficient number, since it is larger than the sum of its proper divisors (56541).

3783691 is an equidigital number, since it uses as much as digits as its factorization.

3783691 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56540.

The product of its digits is 27216, while the sum is 37.

The square root of 3783691 is about 1945.1712006916. The cubic root of 3783691 is about 155.8255089313.

The spelling of 3783691 in words is "three million, seven hundred eighty-three thousand, six hundred ninety-one".