222687994 has 8 divisors (see below), whose sum is σ = 334237140. Its totient is φ = 111275616.

The previous prime is 222687991. The next prime is 222688027. The reversal of 222687994 is 499786222.

It can be written as a sum of positive squares in 2 ways, for example, as 213306025 + 9381969 = 14605^2 + 3063^2 .

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

It is not an unprimeable number, because it can be changed into a prime (222687991) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 30019 + ... + 36694.

Almost surely, 2^222687994 is an apocalyptic number.

222687994 is a deficient number, since it is larger than the sum of its proper divisors (111549146).

222687994 is a wasteful number, since it uses less digits than its factorization.

222687994 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68384.

The product of its digits is 870912, while the sum is 49.

The square root of 222687994 is about 14922.7341328592. The cubic root of 222687994 is about 606.1297507065.

The spelling of 222687994 in words is "two hundred twenty-two million, six hundred eighty-seven thousand, nine hundred ninety-four".