3681723 has 4 divisors (see below), whose sum is σ = 4908968. Its totient is φ = 2454480.

The previous prime is 3681719. The next prime is 3681731. The reversal of 3681723 is 3271863.

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

It is not a de Polignac number, because 3681723 - 2² = 3681719 is a prime.

It is a D-number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3681793) 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 in 3 ways as a sum of consecutive naturals, for example, 613618 + ... + 613623.

It is an arithmetic number, because the mean of its divisors is an integer number (1227242).

Almost surely, 2^3681723 is an apocalyptic number.

3681723 is a deficient number, since it is larger than the sum of its proper divisors (1227245).

3681723 is a wasteful number, since it uses less digits than its factorization.

3681723 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1227244.

The product of its digits is 6048, while the sum is 30.

The square root of 3681723 is about 1918.7816446902. The cubic root of 3681723 is about 154.4129441169.

The spelling of 3681723 in words is "three million, six hundred eighty-one thousand, seven hundred twenty-three".