722243717 has 4 divisors (see below), whose sum is σ = 777800940. Its totient is φ = 666686496.

The previous prime is 722243707. The next prime is 722243729. The reversal of 722243717 is 717342227.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 491021281 + 231222436 = 22159^2 + 15206^2 .

It is a cyclic number.

It is not a de Polignac number, because 722243717 - 2⁸ = 722243461 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (722243707) 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 in 3 ways as a sum of consecutive naturals, for example, 27778592 + ... + 27778617.

It is an arithmetic number, because the mean of its divisors is an integer number (194450235).

Almost surely, 2^722243717 is an apocalyptic number.

It is an amenable number.

722243717 is a deficient number, since it is larger than the sum of its proper divisors (55557223).

722243717 is a wasteful number, since it uses less digits than its factorization.

722243717 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55557222.

The product of its digits is 32928, while the sum is 35.

The square root of 722243717 is about 26874.5924062115. The cubic root of 722243717 is about 897.2110027692.

The spelling of 722243717 in words is "seven hundred twenty-two million, two hundred forty-three thousand, seven hundred seventeen".