222060649 has 2 divisors, whose sum is σ = 222060650. Its totient is φ = 222060648.

The previous prime is 222060623. The next prime is 222060691. The reversal of 222060649 is 946060222.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 165585424 + 56475225 = 12868^2 + 7515^2 .

It is a cyclic number.

It is not a de Polignac number, because 222060649 - 2⁵ = 222060617 is a prime.

It is equal to p_12229771 and since 222060649 and 12229771 have the same sum of digits, it is a Honaker prime.

It is a self number, because there is not a number n which added to its sum of digits gives 222060649.

It is not a weakly prime, because it can be changed into another prime (222063649) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 111030324 + 111030325.

It is an arithmetic number, because the mean of its divisors is an integer number (111030325).

Almost surely, 2^222060649 is an apocalyptic number.

It is an amenable number.

222060649 is a deficient number, since it is larger than the sum of its proper divisors (1).

222060649 is an equidigital number, since it uses as much as digits as its factorization.

222060649 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 10368, while the sum is 31.

The square root of 222060649 is about 14901.6995339458. The cubic root of 222060649 is about 605.5600296701.

The spelling of 222060649 in words is "two hundred twenty-two million, sixty thousand, six hundred forty-nine".