3689723 has 2 divisors, whose sum is σ = 3689724. Its totient is φ = 3689722.

The previous prime is 3689717. The next prime is 3689753. The reversal of 3689723 is 3279863.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 3689723 - 2¹⁸ = 3427579 is a prime.

It is a super-2 number, since 2×3689723² = 27228111633458, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (3689753) 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, 1844861 + 1844862.

It is an arithmetic number, because the mean of its divisors is an integer number (1844862).

Almost surely, 2^3689723 is an apocalyptic number.

3689723 is a deficient number, since it is larger than the sum of its proper divisors (1).

3689723 is an equidigital number, since it uses as much as digits as its factorization.

3689723 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 54432, while the sum is 38.

The square root of 3689723 is about 1920.8651696566. The cubic root of 3689723 is about 154.5247042813.

The spelling of 3689723 in words is "three million, six hundred eighty-nine thousand, seven hundred twenty-three".