222566493 has 8 divisors (see below), whose sum is σ = 298029888. Its totient is φ = 147740384.

The previous prime is 222566473. The next prime is 222566521. The reversal of 222566493 is 394665222.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 222566493 - 2¹⁸ = 222304349 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (222566473) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 158505 + ... + 159902.

It is an arithmetic number, because the mean of its divisors is an integer number (37253736).

Almost surely, 2^222566493 is an apocalyptic number.

It is an amenable number.

222566493 is a deficient number, since it is larger than the sum of its proper divisors (75463395).

222566493 is a wasteful number, since it uses less digits than its factorization.

222566493 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 318643.

The product of its digits is 155520, while the sum is 39.

The square root of 222566493 is about 14918.6625741050. The cubic root of 222566493 is about 606.0194936491.

The spelling of 222566493 in words is "two hundred twenty-two million, five hundred sixty-six thousand, four hundred ninety-three".