222985723 has 4 divisors (see below), whose sum is σ = 223106400. Its totient is φ = 222865048.

The previous prime is 222985703. The next prime is 222985751. The reversal of 222985723 is 327589222.

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

It is a cyclic number.

It is not a de Polignac number, because 222985723 - 2²¹ = 220888571 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (222985703) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 57523 + ... + 61276.

It is an arithmetic number, because the mean of its divisors is an integer number (55776600).

Almost surely, 2^222985723 is an apocalyptic number.

222985723 is a deficient number, since it is larger than the sum of its proper divisors (120677).

222985723 is a wasteful number, since it uses less digits than its factorization.

222985723 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 120676.

The product of its digits is 120960, while the sum is 40.

The square root of 222985723 is about 14932.7064860996. The cubic root of 222985723 is about 606.3997578380.

The spelling of 222985723 in words is "two hundred twenty-two million, nine hundred eighty-five thousand, seven hundred twenty-three".