664462361 has 2 divisors, whose sum is σ = 664462362. Its totient is φ = 664462360.

The previous prime is 664462333. The next prime is 664462367. The reversal of 664462361 is 163264466.

It is a happy number.

664462361 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 473497600 + 190964761 = 21760^2 + 13819^2 .

It is a cyclic number.

It is not a de Polignac number, because 664462361 - 2²² = 660268057 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (664462367) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 332231180 + 332231181.

It is an arithmetic number, because the mean of its divisors is an integer number (332231181).

Almost surely, 2^664462361 is an apocalyptic number.

It is an amenable number.

664462361 is a deficient number, since it is larger than the sum of its proper divisors (1).

664462361 is an equidigital number, since it uses as much as digits as its factorization.

664462361 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 124416, while the sum is 38.

The square root of 664462361 is about 25777.1674355426. The cubic root of 664462361 is about 872.6165824245.

The spelling of 664462361 in words is "six hundred sixty-four million, four hundred sixty-two thousand, three hundred sixty-one".