722277 has 20 divisors (see below), whose sum is σ = 1112716. Its totient is φ = 466560.

The previous prime is 722273. The next prime is 722287. The reversal of 722277 is 772227.

It can be written as a sum of positive squares in 2 ways, for example, as 599076 + 123201 = 774^2 + 351^2 .

It is not a de Polignac number, because 722277 - 2² = 722273 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Duffinian number.

722277 is a lucky number.

It is a self number, because there is not a number n which added to its sum of digits gives 722277.

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 722277.

It is not an unprimeable number, because it can be changed into a prime (722273) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 2877 + ... + 3117.

2⁷²²²⁷⁷ is an apocalyptic number.

It is an amenable number.

722277 is a deficient number, since it is larger than the sum of its proper divisors (390439).

722277 is a wasteful number, since it uses less digits than its factorization.

722277 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 290 (or 281 counting only the distinct ones).

The product of its digits is 2744, while the sum is 27.

The square root of 722277 is about 849.8688134059. The cubic root of 722277 is about 89.7224784551.

It can be divided in two parts, 722 and 277, that added together give a palindrome (999).

The spelling of 722277 in words is "seven hundred twenty-two thousand, two hundred seventy-seven", and thus it is an iban number.