222556679 has 2 divisors, whose sum is σ = 222556680. Its totient is φ = 222556678.

The previous prime is 222556661. The next prime is 222556723. The reversal of 222556679 is 976655222.

222556679 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an a-pointer prime, because the next prime (222556723) can be obtained adding 222556679 to its sum of digits (44).

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 222556679 - 2²⁰ = 221508103 is a prime.

It is a plaindrome in base 10.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (222556619) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 111278339 + 111278340.

It is an arithmetic number, because the mean of its divisors is an integer number (111278340).

Almost surely, 2^222556679 is an apocalyptic number.

222556679 is a deficient number, since it is larger than the sum of its proper divisors (1).

222556679 is an equidigital number, since it uses as much as digits as its factorization.

222556679 is an evil number, because the sum of its binary digits is even.

The product of its digits is 453600, while the sum is 44.

The square root of 222556679 is about 14918.3336535955. Note that the first 3 decimals coincide. The cubic root of 222556679 is about 606.0105861047.

The spelling of 222556679 in words is "two hundred twenty-two million, five hundred fifty-six thousand, six hundred seventy-nine".