222990647 has 8 divisors (see below), whose sum is σ = 248920320. Its totient is φ = 198003960.

The previous prime is 222990637. The next prime is 222990661. The reversal of 222990647 is 746099222.

222990647 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 222990647 - 2⁶ = 222990583 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (222990637) 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, 235247 + ... + 236192.

It is an arithmetic number, because the mean of its divisors is an integer number (31115040).

Almost surely, 2^222990647 is an apocalyptic number.

222990647 is a deficient number, since it is larger than the sum of its proper divisors (25929673).

222990647 is a wasteful number, since it uses less digits than its factorization.

222990647 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 471493.

The product of its (nonzero) digits is 108864, while the sum is 41.

The square root of 222990647 is about 14932.8713581816. The cubic root of 222990647 is about 606.4042213382.

The spelling of 222990647 in words is "two hundred twenty-two million, nine hundred ninety thousand, six hundred forty-seven".