3688723 has 4 divisors (see below), whose sum is σ = 3696480. Its totient is φ = 3680968.

The previous prime is 3688709. The next prime is 3688757. The reversal of 3688723 is 3278863.

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

It is a cyclic number.

It is not a de Polignac number, because 3688723 - 2⁵ = 3688691 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3688703) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3115 + ... + 4132.

It is an arithmetic number, because the mean of its divisors is an integer number (924120).

Almost surely, 2^3688723 is an apocalyptic number.

3688723 is a deficient number, since it is larger than the sum of its proper divisors (7757).

3688723 is an equidigital number, since it uses as much as digits as its factorization.

3688723 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7756.

The product of its digits is 48384, while the sum is 37.

The square root of 3688723 is about 1920.6048526441. The cubic root of 3688723 is about 154.5107431008.

The spelling of 3688723 in words is "three million, six hundred eighty-eight thousand, seven hundred twenty-three".