22165706 has 4 divisors (see below), whose sum is σ = 33248562. Its totient is φ = 11082852.

The previous prime is 22165681. The next prime is 22165709. The reversal of 22165706 is 60756122.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 11868025 + 10297681 = 3445^2 + 3209^2 .

It is not an unprimeable number, because it can be changed into a prime (22165709) 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 as a sum of consecutive naturals, namely, 5541425 + ... + 5541428.

Almost surely, 2^22165706 is an apocalyptic number.

22165706 is a deficient number, since it is larger than the sum of its proper divisors (11082856).

22165706 is a wasteful number, since it uses less digits than its factorization.

22165706 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11082855.

The product of its (nonzero) digits is 5040, while the sum is 29.

The square root of 22165706 is about 4708.0469411424. The cubic root of 22165706 is about 280.9056812920.

The spelling of 22165706 in words is "twenty-two million, one hundred sixty-five thousand, seven hundred six".