22687601 has 2 divisors, whose sum is σ = 22687602. Its totient is φ = 22687600.

The previous prime is 22687589. The next prime is 22687619. The reversal of 22687601 is 10678622.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 22572001 + 115600 = 4751^2 + 340^2 .

It is a cyclic number.

It is not a de Polignac number, because 22687601 - 2¹⁸ = 22425457 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (22687631) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11343800 + 11343801.

It is an arithmetic number, because the mean of its divisors is an integer number (11343801).

Almost surely, 2^22687601 is an apocalyptic number.

It is an amenable number.

22687601 is a deficient number, since it is larger than the sum of its proper divisors (1).

22687601 is an equidigital number, since it uses as much as digits as its factorization.

22687601 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8064, while the sum is 32.

The square root of 22687601 is about 4763.1503230530. The cubic root of 22687601 is about 283.0932571494.

The spelling of 22687601 in words is "twenty-two million, six hundred eighty-seven thousand, six hundred one".