222555644 has 6 divisors (see below), whose sum is σ = 389472384. Its totient is φ = 111277820.

The previous prime is 222555637. The next prime is 222555649. The reversal of 222555644 is 446555222.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (222555649) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27819452 + ... + 27819459.

It is an arithmetic number, because the mean of its divisors is an integer number (64912064).

Almost surely, 2^222555644 is an apocalyptic number.

It is an amenable number.

222555644 is a deficient number, since it is larger than the sum of its proper divisors (166916740).

222555644 is a wasteful number, since it uses less digits than its factorization.

222555644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55638915 (or 55638913 counting only the distinct ones).

The product of its digits is 96000, while the sum is 35.

The square root of 222555644 is about 14918.2989646943. The cubic root of 222555644 is about 606.0096466857.

The spelling of 222555644 in words is "two hundred twenty-two million, five hundred fifty-five thousand, six hundred forty-four".