722534401 has 2 divisors, whose sum is σ = 722534402. Its totient is φ = 722534400.

The previous prime is 722534387. The next prime is 722534419. The reversal of 722534401 is 104435227.

It is a Cunningham number, because it is equal to 26880²+1.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 722534400 + 1 = 26880^2 + 1^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-722534401 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 722534401.

It is not a weakly prime, because it can be changed into another prime (722532401) 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 as a sum of consecutive naturals, namely, 361267200 + 361267201.

It is an arithmetic number, because the mean of its divisors is an integer number (361267201).

It is a Proth number, since it is equal to 11025 ⋅ 2¹⁶ + 1 and 11025 < 2¹⁶.

Almost surely, 2^722534401 is an apocalyptic number.

It is an amenable number.

722534401 is a deficient number, since it is larger than the sum of its proper divisors (1).

722534401 is an equidigital number, since it uses as much as digits as its factorization.

722534401 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6720, while the sum is 28.

The square root of 722534401 is about 26880.0000186012. Note that the first 4 decimals coincide. The cubic root of 722534401 is about 897.3313545267.

Adding to 722534401 its reverse (104435227), we get a palindrome (826969628).

The spelling of 722534401 in words is "seven hundred twenty-two million, five hundred thirty-four thousand, four hundred one".