723553 has 2 divisors, whose sum is σ = 723554. Its totient is φ = 723552.

The previous prime is 723551. The next prime is 723559. The reversal of 723553 is 355327.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 692224 + 31329 = 832^2 + 177^2 .

It is a cyclic number.

It is not a de Polignac number, because 723553 - 2¹ = 723551 is a prime.

Together with 723551, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (723551) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 361776 + 361777.

It is an arithmetic number, because the mean of its divisors is an integer number (361777).

2⁷²³⁵⁵³ is an apocalyptic number.

It is an amenable number.

723553 is a deficient number, since it is larger than the sum of its proper divisors (1).

723553 is an equidigital number, since it uses as much as digits as its factorization.

723553 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3150, while the sum is 25.

The square root of 723553 is about 850.6191862402. The cubic root of 723553 is about 89.7752830025.

The spelling of 723553 in words is "seven hundred twenty-three thousand, five hundred fifty-three".