3745691 has 2 divisors, whose sum is σ = 3745692. Its totient is φ = 3745690.

The previous prime is 3745663. The next prime is 3745697. The reversal of 3745691 is 1965473.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 3745691 - 2¹⁰ = 3744667 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (3745697) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1872845 + 1872846.

It is an arithmetic number, because the mean of its divisors is an integer number (1872846).

Almost surely, 2^3745691 is an apocalyptic number.

3745691 is a deficient number, since it is larger than the sum of its proper divisors (1).

3745691 is an equidigital number, since it uses as much as digits as its factorization.

3745691 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 22680, while the sum is 35.

The square root of 3745691 is about 1935.3787742972. The cubic root of 3745691 is about 155.3020955357.

The spelling of 3745691 in words is "three million, seven hundred forty-five thousand, six hundred ninety-one".