222947566 has 4 divisors (see below), whose sum is σ = 334421352. Its totient is φ = 111473782.

The previous prime is 222947551. The next prime is 222947587. The reversal of 222947566 is 665749222.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55736890 + ... + 55736893.

It is an arithmetic number, because the mean of its divisors is an integer number (83605338).

Almost surely, 2^222947566 is an apocalyptic number.

222947566 is a deficient number, since it is larger than the sum of its proper divisors (111473786).

222947566 is a wasteful number, since it uses less digits than its factorization.

222947566 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 111473785.

The product of its digits is 362880, while the sum is 43.

The square root of 222947566 is about 14931.4287996829. The cubic root of 222947566 is about 606.3651671100.

The spelling of 222947566 in words is "two hundred twenty-two million, nine hundred forty-seven thousand, five hundred sixty-six".