64215343 has 2 divisors, whose sum is σ = 64215344. Its totient is φ = 64215342.

The previous prime is 64215331. The next prime is 64215401. The reversal of 64215343 is 34351246.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-64215343 is a prime.

It is a super-2 number, since 2×64215343² = 8247220553215298, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (64215323) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32107671 + 32107672.

It is an arithmetic number, because the mean of its divisors is an integer number (32107672).

Almost surely, 2^64215343 is an apocalyptic number.

64215343 is a deficient number, since it is larger than the sum of its proper divisors (1).

64215343 is an equidigital number, since it uses as much as digits as its factorization.

64215343 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 8640, while the sum is 28.

The square root of 64215343 is about 8013.4476350694. The cubic root of 64215343 is about 400.4481290135.

Adding to 64215343 its reverse (34351246), we get a palindrome (98566589).

The spelling of 64215343 in words is "sixty-four million, two hundred fifteen thousand, three hundred forty-three".