64320337 has 2 divisors, whose sum is σ = 64320338. Its totient is φ = 64320336.

The previous prime is 64320331. The next prime is 64320359. The reversal of 64320337 is 73302346.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 63744256 + 576081 = 7984^2 + 759^2 .

It is a cyclic number.

It is not a de Polignac number, because 64320337 - 2⁷ = 64320209 is a prime.

It is not a weakly prime, because it can be changed into another prime (64320331) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32160168 + 32160169.

It is an arithmetic number, because the mean of its divisors is an integer number (32160169).

Almost surely, 2^64320337 is an apocalyptic number.

It is an amenable number.

64320337 is a deficient number, since it is larger than the sum of its proper divisors (1).

64320337 is an equidigital number, since it uses as much as digits as its factorization.

64320337 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 9072, while the sum is 28.

The square root of 64320337 is about 8019.9960723182. The cubic root of 64320337 is about 400.6662583833. Note that the first 3 decimals are identical.

Subtracting 64320337 from its reverse (73302346), we obtain a square (8982009 = 2997²).

The spelling of 64320337 in words is "sixty-four million, three hundred twenty thousand, three hundred thirty-seven".