664022341 has 2 divisors, whose sum is σ = 664022342. Its totient is φ = 664022340.

The previous prime is 664022339. The next prime is 664022353. The reversal of 664022341 is 143220466.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 623750625 + 40271716 = 24975^2 + 6346^2 .

It is a cyclic number.

It is not a de Polignac number, because 664022341 - 2¹ = 664022339 is a prime.

Together with 664022339, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (664022311) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 332011170 + 332011171.

It is an arithmetic number, because the mean of its divisors is an integer number (332011171).

Almost surely, 2^664022341 is an apocalyptic number.

It is an amenable number.

664022341 is a deficient number, since it is larger than the sum of its proper divisors (1).

664022341 is an equidigital number, since it uses as much as digits as its factorization.

664022341 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6912, while the sum is 28.

The square root of 664022341 is about 25768.6309492763. The cubic root of 664022341 is about 872.4239186211.

The spelling of 664022341 in words is "six hundred sixty-four million, twenty-two thousand, three hundred forty-one".