722633 has 2 divisors, whose sum is σ = 722634. Its totient is φ = 722632.

The previous prime is 722611. The next prime is 722639. The reversal of 722633 is 336227.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 499849 + 222784 = 707^2 + 472^2 .

It is an emirp because it is prime and its reverse (336227) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 722633 - 2⁸ = 722377 is a prime.

It is a d-powerful number, because it can be written as 7³ + 2⁹ + 6³ + 2¹⁷ + 3¹⁰ + 3¹² .

It is a junction number, because it is equal to n+sod(n) for n = 722599 and 722608.

It is not a weakly prime, because it can be changed into another prime (722639) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 361316 + 361317.

It is an arithmetic number, because the mean of its divisors is an integer number (361317).

2⁷²²⁶³³ is an apocalyptic number.

It is an amenable number.

722633 is a deficient number, since it is larger than the sum of its proper divisors (1).

722633 is an equidigital number, since it uses as much as digits as its factorization.

722633 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1512, while the sum is 23.

The square root of 722633 is about 850.0782316940. The cubic root of 722633 is about 89.7372170092.

The spelling of 722633 in words is "seven hundred twenty-two thousand, six hundred thirty-three".