722116 has 12 divisors (see below), whose sum is σ = 1281532. Its totient is φ = 355968.

The previous prime is 722093. The next prime is 722119. The reversal of 722116 is 611227.

It can be written as a sum of positive squares in 2 ways, for example, as 476100 + 246016 = 690^2 + 496^2 .

It is a junction number, because it is equal to n+sod(n) for n = 722093 and 722102.

It is not an unprimeable number, because it can be changed into a prime (722119) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 945 + ... + 1528.

2⁷²²¹¹⁶ is an apocalyptic number.

It is an amenable number.

722116 is a deficient number, since it is larger than the sum of its proper divisors (559416).

722116 is a wasteful number, since it uses less digits than its factorization.

722116 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2550 (or 2548 counting only the distinct ones).

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

The square root of 722116 is about 849.7740876256. The cubic root of 722116 is about 89.7158113950.

Subtracting from 722116 its reverse (611227), we obtain a square (110889 = 333²).

It can be divided in two parts, 722 and 116, that added together give a palindrome (838).

The spelling of 722116 in words is "seven hundred twenty-two thousand, one hundred sixteen".