22220655 has 8 divisors (see below), whose sum is σ = 35553072. Its totient is φ = 11851008.

The previous prime is 22220651. The next prime is 22220713. The reversal of 22220655 is 55602222.

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

It is not a de Polignac number, because 22220655 - 2² = 22220651 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22220651) 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, 740674 + ... + 740703.

It is an arithmetic number, because the mean of its divisors is an integer number (4444134).

Almost surely, 2^22220655 is an apocalyptic number.

22220655 is a deficient number, since it is larger than the sum of its proper divisors (13332417).

22220655 is a wasteful number, since it uses less digits than its factorization.

22220655 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1481385.

The product of its (nonzero) digits is 2400, while the sum is 24.

The square root of 22220655 is about 4713.8789759602. The cubic root of 22220655 is about 281.1376123798.

Adding to 22220655 its reverse (55602222), we get a palindrome (77822877).

The spelling of 22220655 in words is "twenty-two million, two hundred twenty thousand, six hundred fifty-five".