723601 has 2 divisors, whose sum is σ = 723602. Its totient is φ = 723600.

The previous prime is 723589. The next prime is 723607. The reversal of 723601 is 106327.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 497025 + 226576 = 705^2 + 476^2 .

It is a cyclic number.

It is not a de Polignac number, because 723601 - 2⁷ = 723473 is a prime.

It is not a weakly prime, because it can be changed into another prime (723607) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 361800 + 361801.

It is an arithmetic number, because the mean of its divisors is an integer number (361801).

2⁷²³⁶⁰¹ is an apocalyptic number.

It is an amenable number.

723601 is a deficient number, since it is larger than the sum of its proper divisors (1).

723601 is an equidigital number, since it uses as much as digits as its factorization.

723601 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 252, while the sum is 19.

The square root of 723601 is about 850.6474005133. The cubic root of 723601 is about 89.7772681684. Note that the first 3 decimals are identical.

Adding to 723601 its reverse (106327), we get a palindrome (829928).

It can be divided in two parts, 72360 and 1, that added together give a square (72361 = 269²).

The spelling of 723601 in words is "seven hundred twenty-three thousand, six hundred one".