22066417 has 2 divisors, whose sum is σ = 22066418. Its totient is φ = 22066416.

The previous prime is 22066409. The next prime is 22066441. The reversal of 22066417 is 71466022.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 20647936 + 1418481 = 4544^2 + 1191^2 .

It is a cyclic number.

It is not a de Polignac number, because 22066417 - 2³ = 22066409 is a prime.

It is not a weakly prime, because it can be changed into another prime (22006417) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11033208 + 11033209.

It is an arithmetic number, because the mean of its divisors is an integer number (11033209).

Almost surely, 2^22066417 is an apocalyptic number.

It is an amenable number.

22066417 is a deficient number, since it is larger than the sum of its proper divisors (1).

22066417 is an equidigital number, since it uses as much as digits as its factorization.

22066417 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4032, while the sum is 28.

The square root of 22066417 is about 4697.4905002565. The cubic root of 22066417 is about 280.4856240971.

The spelling of 22066417 in words is "twenty-two million, sixty-six thousand, four hundred seventeen".