3691003 has 2 divisors, whose sum is σ = 3691004. Its totient is φ = 3691002.

The previous prime is 3690983. The next prime is 3691007. The reversal of 3691003 is 3001963.

It is a strong prime.

It is an emirp because it is prime and its reverse (3001963) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 3691003 - 2¹⁷ = 3559931 is a prime.

It is not a weakly prime, because it can be changed into another prime (3691007) 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, 1845501 + 1845502.

It is an arithmetic number, because the mean of its divisors is an integer number (1845502).

Almost surely, 2^3691003 is an apocalyptic number.

3691003 is a deficient number, since it is larger than the sum of its proper divisors (1).

3691003 is an equidigital number, since it uses as much as digits as its factorization.

3691003 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 486, while the sum is 22.

The square root of 3691003 is about 1921.1983239635. The cubic root of 3691003 is about 154.5425709119.

Adding to 3691003 its reverse (3001963), we get a palindrome (6692966).

The spelling of 3691003 in words is "three million, six hundred ninety-one thousand, three".