223818061 has 2 divisors, whose sum is σ = 223818062. Its totient is φ = 223818060.

The previous prime is 223818059. The next prime is 223818079. The reversal of 223818061 is 160818322.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 151142436 + 72675625 = 12294^2 + 8525^2 .

It is a cyclic number.

It is not a de Polignac number, because 223818061 - 2¹ = 223818059 is a prime.

Together with 223818059, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (223818011) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 111909030 + 111909031.

It is an arithmetic number, because the mean of its divisors is an integer number (111909031).

Almost surely, 2^223818061 is an apocalyptic number.

It is an amenable number.

223818061 is a deficient number, since it is larger than the sum of its proper divisors (1).

223818061 is an equidigital number, since it uses as much as digits as its factorization.

223818061 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4608, while the sum is 31.

The square root of 223818061 is about 14960.5501569962. The cubic root of 223818061 is about 607.1533230636.

The spelling of 223818061 in words is "two hundred twenty-three million, eight hundred eighteen thousand, sixty-one".