64543337 has 2 divisors, whose sum is σ = 64543338. Its totient is φ = 64543336.

The previous prime is 64543327. The next prime is 64543397. The reversal of 64543337 is 73334546.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 44302336 + 20241001 = 6656^2 + 4499^2 .

It is a cyclic number.

It is not a de Polignac number, because 64543337 - 2⁸ = 64543081 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 64543297 and 64543306.

It is not a weakly prime, because it can be changed into another prime (64543327) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32271668 + 32271669.

It is an arithmetic number, because the mean of its divisors is an integer number (32271669).

Almost surely, 2^64543337 is an apocalyptic number.

It is an amenable number.

64543337 is a deficient number, since it is larger than the sum of its proper divisors (1).

64543337 is an equidigital number, since it uses as much as digits as its factorization.

64543337 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 90720, while the sum is 35.

The square root of 64543337 is about 8033.8867928295. The cubic root of 64543337 is about 401.1287638178.

The spelling of 64543337 in words is "sixty-four million, five hundred forty-three thousand, three hundred thirty-seven".