722244561 has 8 divisors (see below), whose sum is σ = 986480544. Its totient is φ = 469752480.

The previous prime is 722244557. The next prime is 722244577. The reversal of 722244561 is 165442227.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 722244561 - 2² = 722244557 is a prime.

It is not an unprimeable number, because it can be changed into a prime (722244161) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2935831 + ... + 2936076.

It is an arithmetic number, because the mean of its divisors is an integer number (123310068).

Almost surely, 2^722244561 is an apocalyptic number.

It is an amenable number.

722244561 is a deficient number, since it is larger than the sum of its proper divisors (264235983).

722244561 is a wasteful number, since it uses less digits than its factorization.

722244561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5871951.

The product of its digits is 26880, while the sum is 33.

The square root of 722244561 is about 26874.6081087706. The cubic root of 722244561 is about 897.2113522569.

Adding to 722244561 its reverse (165442227), we get a palindrome (887686788).

The spelling of 722244561 in words is "seven hundred twenty-two million, two hundred forty-four thousand, five hundred sixty-one".