722612329 has 2 divisors, whose sum is σ = 722612330. Its totient is φ = 722612328.

The previous prime is 722612323. The next prime is 722612411. The reversal of 722612329 is 923216227.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 418284304 + 304328025 = 20452^2 + 17445^2 .

It is a cyclic number.

It is not a de Polignac number, because 722612329 - 2¹³ = 722604137 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 722612294 and 722612303.

It is not a weakly prime, because it can be changed into another prime (722612323) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 361306164 + 361306165.

It is an arithmetic number, because the mean of its divisors is an integer number (361306165).

Almost surely, 2^722612329 is an apocalyptic number.

It is an amenable number.

722612329 is a deficient number, since it is larger than the sum of its proper divisors (1).

722612329 is an equidigital number, since it uses as much as digits as its factorization.

722612329 is an evil number, because the sum of its binary digits is even.

The product of its digits is 18144, while the sum is 34.

The square root of 722612329 is about 26881.4495330888. The cubic root of 722612329 is about 897.3636135323.

The spelling of 722612329 in words is "seven hundred twenty-two million, six hundred twelve thousand, three hundred twenty-nine".