222766649 has 16 divisors (see below), whose sum is σ = 260382720. Its totient is φ = 186647760.

The previous prime is 222766637. The next prime is 222766667. The reversal of 222766649 is 946667222.

222766649 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 222766649 - 2²⁰ = 221718073 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (222766619) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 55004 + ... + 58914.

It is an arithmetic number, because the mean of its divisors is an integer number (16273920).

Almost surely, 2^222766649 is an apocalyptic number.

It is an amenable number.

222766649 is a deficient number, since it is larger than the sum of its proper divisors (37616071).

222766649 is a wasteful number, since it uses less digits than its factorization.

222766649 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4100.

The product of its digits is 435456, while the sum is 44.

The square root of 222766649 is about 14925.3693086637. The cubic root of 222766649 is about 606.2011054343.

The spelling of 222766649 in words is "two hundred twenty-two million, seven hundred sixty-six thousand, six hundred forty-nine".