4721723 has 2 divisors, whose sum is σ = 4721724. Its totient is φ = 4721722.

The previous prime is 4721719. The next prime is 4721729. The reversal of 4721723 is 3271274.

4721723 is nontrivially palindromic in base 9.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 4721723 - 2² = 4721719 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 4721692 and 4721701.

It is not a weakly prime, because it can be changed into another prime (4721729) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2360861 + 2360862.

It is an arithmetic number, because the mean of its divisors is an integer number (2360862).

Almost surely, 2^4721723 is an apocalyptic number.

4721723 is a deficient number, since it is larger than the sum of its proper divisors (1).

4721723 is an equidigital number, since it uses as much as digits as its factorization.

4721723 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2352, while the sum is 26.

The square root of 4721723 is about 2172.9525995751. The cubic root of 4721723 is about 167.7645392859.

Adding to 4721723 its reverse (3271274), we get a palindrome (7992997).

The spelling of 4721723 in words is "four million, seven hundred twenty-one thousand, seven hundred twenty-three".