722611 has 2 divisors, whose sum is σ = 722612. Its totient is φ = 722610.

The previous prime is 722599. The next prime is 722633. The reversal of 722611 is 116227.

722611 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 722611 - 2¹⁹ = 198323 is a prime.

It is not a weakly prime, because it can be changed into another prime (722011) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 361305 + 361306.

It is an arithmetic number, because the mean of its divisors is an integer number (361306).

2⁷²²⁶¹¹ is an apocalyptic number.

722611 is a deficient number, since it is larger than the sum of its proper divisors (1).

722611 is an equidigital number, since it uses as much as digits as its factorization.

722611 is an evil number, because the sum of its binary digits is even.

The product of its digits is 168, while the sum is 19.

The square root of 722611 is about 850.0652916100. The cubic root of 722611 is about 89.7363063400.

Adding to 722611 its reverse (116227), we get a palindrome (838838).

The spelling of 722611 in words is "seven hundred twenty-two thousand, six hundred eleven".