722705245 has 4 divisors (see below), whose sum is σ = 867246300. Its totient is φ = 578164192.

The previous prime is 722705233. The next prime is 722705267. The reversal of 722705245 is 542507227.

It is a happy number.

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 485144676 + 237560569 = 22026^2 + 15413^2 .

It is a cyclic number.

It is not a de Polignac number, because 722705245 - 2⁷ = 722705117 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 722705245.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 72270520 + ... + 72270529.

It is an arithmetic number, because the mean of its divisors is an integer number (216811575).

Almost surely, 2^722705245 is an apocalyptic number.

It is an amenable number.

722705245 is a deficient number, since it is larger than the sum of its proper divisors (144541055).

722705245 is a wasteful number, since it uses less digits than its factorization.

722705245 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 144541054.

The product of its (nonzero) digits is 39200, while the sum is 34.

The square root of 722705245 is about 26883.1777325524. The cubic root of 722705245 is about 897.4020739260.

The spelling of 722705245 in words is "seven hundred twenty-two million, seven hundred five thousand, two hundred forty-five".