722068577 has 2 divisors, whose sum is σ = 722068578. Its totient is φ = 722068576.

The previous prime is 722068553. The next prime is 722068583. The reversal of 722068577 is 775860227.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 534488161 + 187580416 = 23119^2 + 13696^2 .

It is an emirp because it is prime and its reverse (775860227) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 722068577 - 2²² = 717874273 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (722068537) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 361034288 + 361034289.

It is an arithmetic number, because the mean of its divisors is an integer number (361034289).

Almost surely, 2^722068577 is an apocalyptic number.

It is an amenable number.

722068577 is a deficient number, since it is larger than the sum of its proper divisors (1).

722068577 is an equidigital number, since it uses as much as digits as its factorization.

722068577 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 329280, while the sum is 44.

The square root of 722068577 is about 26871.3337406240. Note that the first 3 decimals coincide. The cubic root of 722068577 is about 897.1384740486.

The spelling of 722068577 in words is "seven hundred twenty-two million, sixty-eight thousand, five hundred seventy-seven".