222774913 has 2 divisors, whose sum is σ = 222774914. Its totient is φ = 222774912.

The previous prime is 222774907. The next prime is 222774931. The reversal of 222774913 is 319477222.

Together with next prime (222774931) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 166719744 + 56055169 = 12912^2 + 7487^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-222774913 is a prime.

It is not a weakly prime, because it can be changed into another prime (222774983) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 111387456 + 111387457.

It is an arithmetic number, because the mean of its divisors is an integer number (111387457).

Almost surely, 2^222774913 is an apocalyptic number.

It is an amenable number.

222774913 is a deficient number, since it is larger than the sum of its proper divisors (1).

222774913 is an equidigital number, since it uses as much as digits as its factorization.

222774913 is an evil number, because the sum of its binary digits is even.

The product of its digits is 42336, while the sum is 37.

The square root of 222774913 is about 14925.6461501672. The cubic root of 222774913 is about 606.2086014456.

The spelling of 222774913 in words is "two hundred twenty-two million, seven hundred seventy-four thousand, nine hundred thirteen".