222916723 has 4 divisors (see below), whose sum is σ = 227659680. Its totient is φ = 218173768.

The previous prime is 222916717. The next prime is 222916747. The reversal of 222916723 is 327619222.

It is a happy number.

222916723 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-222916723 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (222916123) 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, 2371408 + ... + 2371501.

It is an arithmetic number, because the mean of its divisors is an integer number (56914920).

Almost surely, 2^222916723 is an apocalyptic number.

222916723 is a deficient number, since it is larger than the sum of its proper divisors (4742957).

222916723 is an equidigital number, since it uses as much as digits as its factorization.

222916723 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4742956.

The product of its digits is 18144, while the sum is 34.

The square root of 222916723 is about 14930.3959425060. The cubic root of 222916723 is about 606.3372039082.

The spelling of 222916723 in words is "two hundred twenty-two million, nine hundred sixteen thousand, seven hundred twenty-three".