722524169 has 2 divisors, whose sum is σ = 722524170. Its totient is φ = 722524168.

The previous prime is 722524133. The next prime is 722524171. The reversal of 722524169 is 961425227.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 625600144 + 96924025 = 25012^2 + 9845^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-722524169 is a prime.

It is a super-2 number, since 2×722524169² = 1044082349578281122, which contains 22 as substring.

Together with 722524171, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (722524109) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 361262084 + 361262085.

It is an arithmetic number, because the mean of its divisors is an integer number (361262085).

Almost surely, 2^722524169 is an apocalyptic number.

It is an amenable number.

722524169 is a deficient number, since it is larger than the sum of its proper divisors (1).

722524169 is an equidigital number, since it uses as much as digits as its factorization.

722524169 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 60480, while the sum is 38.

The square root of 722524169 is about 26879.8096905465. The cubic root of 722524169 is about 897.3271187248.

The spelling of 722524169 in words is "seven hundred twenty-two million, five hundred twenty-four thousand, one hundred sixty-nine".