722244709 has 4 divisors (see below), whose sum is σ = 724046220. Its totient is φ = 720443200.

The previous prime is 722244673. The next prime is 722244751. The reversal of 722244709 is 907442227.

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 377214084 + 345030625 = 19422^2 + 18575^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-722244709 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 (722244799) 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 in 3 ways as a sum of consecutive naturals, for example, 900154 + ... + 900955.

It is an arithmetic number, because the mean of its divisors is an integer number (181011555).

Almost surely, 2^722244709 is an apocalyptic number.

It is an amenable number.

722244709 is a deficient number, since it is larger than the sum of its proper divisors (1801511).

722244709 is a wasteful number, since it uses less digits than its factorization.

722244709 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1801510.

The product of its (nonzero) digits is 56448, while the sum is 37.

The square root of 722244709 is about 26874.6108622990. The cubic root of 722244709 is about 897.2114135414.

The spelling of 722244709 in words is "seven hundred twenty-two million, two hundred forty-four thousand, seven hundred nine".