222836813 has 4 divisors (see below), whose sum is σ = 223510368. Its totient is φ = 222163260.

The previous prime is 222836771. The next prime is 222836819. The reversal of 222836813 is 318638222.

222836813 is nontrivially palindromic in base 16.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 222836813 - 2⁸ = 222836557 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (222836819) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 336281 + ... + 336942.

It is an arithmetic number, because the mean of its divisors is an integer number (55877592).

Almost surely, 2^222836813 is an apocalyptic number.

It is an amenable number.

222836813 is a deficient number, since it is larger than the sum of its proper divisors (673555).

222836813 is an equidigital number, since it uses as much as digits as its factorization.

222836813 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 673554.

The product of its digits is 27648, while the sum is 35.

The square root of 222836813 is about 14927.7196182136. The cubic root of 222836813 is about 606.2647430715.

The spelling of 222836813 in words is "two hundred twenty-two million, eight hundred thirty-six thousand, eight hundred thirteen".