22705169 has 2 divisors, whose sum is σ = 22705170. Its totient is φ = 22705168.

The previous prime is 22705159. The next prime is 22705181. The reversal of 22705169 is 96150722.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 19140625 + 3564544 = 4375^2 + 1888^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-22705169 is a prime.

It is a super-2 number, since 2×22705169² = 1031049398637122, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (22705129) 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, 11352584 + 11352585.

It is an arithmetic number, because the mean of its divisors is an integer number (11352585).

Almost surely, 2^22705169 is an apocalyptic number.

It is an amenable number.

22705169 is a deficient number, since it is larger than the sum of its proper divisors (1).

22705169 is an equidigital number, since it uses as much as digits as its factorization.

22705169 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 7560, while the sum is 32.

The square root of 22705169 is about 4764.9941238159. The cubic root of 22705169 is about 283.1663087866.

The spelling of 22705169 in words is "twenty-two million, seven hundred five thousand, one hundred sixty-nine".