722075447 has 4 divisors (see below), whose sum is σ = 722134440. Its totient is φ = 722016456.

The previous prime is 722075443. The next prime is 722075489. The reversal of 722075447 is 744570227.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 744570227 = 947 ⋅786241.

It is a cyclic number.

It is not a de Polignac number, because 722075447 - 2² = 722075443 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 722075447.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (722075441) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3497 + ... + 38162.

It is an arithmetic number, because the mean of its divisors is an integer number (180533610).

Almost surely, 2^722075447 is an apocalyptic number.

722075447 is a deficient number, since it is larger than the sum of its proper divisors (58993).

722075447 is a wasteful number, since it uses less digits than its factorization.

722075447 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 58992.

The product of its (nonzero) digits is 109760, while the sum is 38.

The square root of 722075447 is about 26871.4615717121. The cubic root of 722075447 is about 897.1413192639.

The spelling of 722075447 in words is "seven hundred twenty-two million, seventy-five thousand, four hundred forty-seven".