22643701 has 2 divisors, whose sum is σ = 22643702. Its totient is φ = 22643700.

The previous prime is 22643683. The next prime is 22643713. The reversal of 22643701 is 10734622.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 20711601 + 1932100 = 4551^2 + 1390^2 .

It is a cyclic number.

It is not a de Polignac number, because 22643701 - 2⁹ = 22643189 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22643791) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11321850 + 11321851.

It is an arithmetic number, because the mean of its divisors is an integer number (11321851).

Almost surely, 2^22643701 is an apocalyptic number.

It is an amenable number.

22643701 is a deficient number, since it is larger than the sum of its proper divisors (1).

22643701 is an equidigital number, since it uses as much as digits as its factorization.

22643701 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2016, while the sum is 25.

The square root of 22643701 is about 4758.5397970386. The cubic root of 22643701 is about 282.9105462133.

The spelling of 22643701 in words is "twenty-two million, six hundred forty-three thousand, seven hundred one".