22155663 has 8 divisors (see below), whose sum is σ = 29833776. Its totient is φ = 14624000.

The previous prime is 22155649. The next prime is 22155671. The reversal of 22155663 is 36655122.

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

It is a cyclic number.

It is not a de Polignac number, because 22155663 - 2⁸ = 22155407 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 22155663.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22155163) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 36258 + ... + 36863.

It is an arithmetic number, because the mean of its divisors is an integer number (3729222).

Almost surely, 2^22155663 is an apocalyptic number.

22155663 is a deficient number, since it is larger than the sum of its proper divisors (7678113).

22155663 is a wasteful number, since it uses less digits than its factorization.

22155663 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 73225.

The product of its digits is 10800, while the sum is 30.

The square root of 22155663 is about 4706.9802421510. The cubic root of 22155663 is about 280.8632499503.

The spelling of 22155663 in words is "twenty-two million, one hundred fifty-five thousand, six hundred sixty-three".