722223861 has 8 divisors (see below), whose sum is σ = 965548320. Its totient is φ = 480190992.

The previous prime is 722223841. The next prime is 722223871. The reversal of 722223861 is 168322227.

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

It is not a de Polignac number, because 722223861 - 2¹¹ = 722221813 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (722223841) 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, 321591 + ... + 323828.

It is an arithmetic number, because the mean of its divisors is an integer number (120693540).

Almost surely, 2^722223861 is an apocalyptic number.

It is an amenable number.

722223861 is a deficient number, since it is larger than the sum of its proper divisors (243324459).

722223861 is a wasteful number, since it uses less digits than its factorization.

722223861 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 645795.

The product of its digits is 16128, while the sum is 33.

The square root of 722223861 is about 26874.2229841162. Note that the first 3 decimals coincide. The cubic root of 722223861 is about 897.2027806209.

The spelling of 722223861 in words is "seven hundred twenty-two million, two hundred twenty-three thousand, eight hundred sixty-one".