722198647 has 2 divisors, whose sum is σ = 722198648. Its totient is φ = 722198646.

The previous prime is 722198627. The next prime is 722198669. The reversal of 722198647 is 746891227.

It is a weak prime.

It is an emirp because it is prime and its reverse (746891227) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 722198647 - 2¹⁵ = 722165879 is a prime.

It is a super-3 number, since 3×722198647³ (a number of 28 digits) contains 333 as substring.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 722198597 and 722198606.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (722198627) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 361099323 + 361099324.

It is an arithmetic number, because the mean of its divisors is an integer number (361099324).

Almost surely, 2^722198647 is an apocalyptic number.

722198647 is a deficient number, since it is larger than the sum of its proper divisors (1).

722198647 is an equidigital number, since it uses as much as digits as its factorization.

722198647 is an evil number, because the sum of its binary digits is even.

The product of its digits is 338688, while the sum is 46.

The square root of 722198647 is about 26873.7538687843. The cubic root of 722198647 is about 897.1923395673.

The spelling of 722198647 in words is "seven hundred twenty-two million, one hundred ninety-eight thousand, six hundred forty-seven".