601223009 has 2 divisors, whose sum is σ = 601223010. Its totient is φ = 601223008.

The previous prime is 601222991. The next prime is 601223011. The reversal of 601223009 is 900322106.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 395214400 + 206008609 = 19880^2 + 14353^2 .

It is a cyclic number.

It is not a de Polignac number, because 601223009 - 2²⁰ = 600174433 is a prime.

It is a super-2 number, since 2×601223009² = 722938213102028162, which contains 22 as substring.

Together with 601223011, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (601223509) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 300611504 + 300611505.

It is an arithmetic number, because the mean of its divisors is an integer number (300611505).

Almost surely, 2^601223009 is an apocalyptic number.

It is an amenable number.

601223009 is a deficient number, since it is larger than the sum of its proper divisors (1).

601223009 is an equidigital number, since it uses as much as digits as its factorization.

601223009 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 648, while the sum is 23.

The square root of 601223009 is about 24519.8492858337. The cubic root of 601223009 is about 844.0053462260.

The spelling of 601223009 in words is "six hundred one million, two hundred twenty-three thousand, nine".