722511 has 6 divisors (see below), whose sum is σ = 1043640. Its totient is φ = 481668.

The previous prime is 722509. The next prime is 722521. The reversal of 722511 is 115227.

722511 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 722511 - 2¹ = 722509 is a prime.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 722511.

It is not an unprimeable number, because it can be changed into a prime (722521) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 40131 + ... + 40148.

It is an arithmetic number, because the mean of its divisors is an integer number (173940).

2⁷²²⁵¹¹ is an apocalyptic number.

722511 is a deficient number, since it is larger than the sum of its proper divisors (321129).

722511 is a wasteful number, since it uses less digits than its factorization.

722511 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 80285 (or 80282 counting only the distinct ones).

The product of its digits is 140, while the sum is 18.

The square root of 722511 is about 850.0064705636. The cubic root of 722511 is about 89.7321667017.

Adding to 722511 its reverse (115227), we get a palindrome (837738).

The spelling of 722511 in words is "seven hundred twenty-two thousand, five hundred eleven".