664022353 has 2 divisors, whose sum is σ = 664022354. Its totient is φ = 664022352.

The previous prime is 664022341. The next prime is 664022467. The reversal of 664022353 is 353220466.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 621355329 + 42667024 = 24927^2 + 6532^2 .

It is a cyclic number.

It is not a de Polignac number, because 664022353 - 2²⁵ = 630467921 is a prime.

It is not a weakly prime, because it can be changed into another prime (664022053) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 332011176 + 332011177.

It is an arithmetic number, because the mean of its divisors is an integer number (332011177).

Almost surely, 2^664022353 is an apocalyptic number.

It is an amenable number.

664022353 is a deficient number, since it is larger than the sum of its proper divisors (1).

664022353 is an equidigital number, since it uses as much as digits as its factorization.

664022353 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 25920, while the sum is 31.

The square root of 664022353 is about 25768.6311821175. The cubic root of 664022353 is about 872.4239238765.

The spelling of 664022353 in words is "six hundred sixty-four million, twenty-two thousand, three hundred fifty-three".