64316443 has 2 divisors, whose sum is σ = 64316444. Its totient is φ = 64316442.

The previous prime is 64316437. The next prime is 64316453. The reversal of 64316443 is 34461346.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 64316443 - 2¹⁷ = 64185371 is a prime.

It is not a weakly prime, because it can be changed into another prime (64316453) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32158221 + 32158222.

It is an arithmetic number, because the mean of its divisors is an integer number (32158222).

Almost surely, 2^64316443 is an apocalyptic number.

64316443 is a deficient number, since it is larger than the sum of its proper divisors (1).

64316443 is an equidigital number, since it uses as much as digits as its factorization.

64316443 is an evil number, because the sum of its binary digits is even.

The product of its digits is 20736, while the sum is 31.

The square root of 64316443 is about 8019.7533004451. The cubic root of 64316443 is about 400.6581726778.

Adding to 64316443 its reverse (34461346), we get a palindrome (98777789).

The spelling of 64316443 in words is "sixty-four million, three hundred sixteen thousand, four hundred forty-three".