22766855 has 4 divisors (see below), whose sum is σ = 27320232. Its totient is φ = 18213480.

The previous prime is 22766851. The next prime is 22766857. The reversal of 22766855 is 55866722.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 55866722 = 2 ⋅27933361.

It is not a de Polignac number, because 22766855 - 2² = 22766851 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22766851) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2276681 + ... + 2276690.

It is an arithmetic number, because the mean of its divisors is an integer number (6830058).

Almost surely, 2^22766855 is an apocalyptic number.

22766855 is a deficient number, since it is larger than the sum of its proper divisors (4553377).

22766855 is an equidigital number, since it uses as much as digits as its factorization.

22766855 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4553376.

The product of its digits is 201600, while the sum is 41.

The square root of 22766855 is about 4771.4625640363. The cubic root of 22766855 is about 283.4225147946.

The spelling of 22766855 in words is "twenty-two million, seven hundred sixty-six thousand, eight hundred fifty-five".