3691693 has 2 divisors, whose sum is σ = 3691694. Its totient is φ = 3691692.

The previous prime is 3691691. The next prime is 3691717. The reversal of 3691693 is 3961963.

3691693 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3541924 + 149769 = 1882^2 + 387^2 .

It is an emirp because it is prime and its reverse (3961963) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 3691693 - 2¹ = 3691691 is a prime.

Together with 3691691, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3691691) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1845846 + 1845847.

It is an arithmetic number, because the mean of its divisors is an integer number (1845847).

Almost surely, 2^3691693 is an apocalyptic number.

It is an amenable number.

3691693 is a deficient number, since it is larger than the sum of its proper divisors (1).

3691693 is an equidigital number, since it uses as much as digits as its factorization.

3691693 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 26244, while the sum is 37.

The square root of 3691693 is about 1921.3778909939. The cubic root of 3691693 is about 154.5522004290.

The spelling of 3691693 in words is "three million, six hundred ninety-one thousand, six hundred ninety-three".