64543499 has 2 divisors, whose sum is σ = 64543500. Its totient is φ = 64543498.

The previous prime is 64543487. The next prime is 64543511. The reversal of 64543499 is 99434546.

It is a happy number.

It is a balanced prime because it is at equal distance from previous prime (64543487) and next prime (64543511).

It is a cyclic number.

It is not a de Polignac number, because 64543499 - 2⁴ = 64543483 is a prime.

It is a Chen prime.

It is a zygodrome in base 3.

It is not a weakly prime, because it can be changed into another prime (64543459) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32271749 + 32271750.

It is an arithmetic number, because the mean of its divisors is an integer number (32271750).

Almost surely, 2^64543499 is an apocalyptic number.

64543499 is a deficient number, since it is larger than the sum of its proper divisors (1).

64543499 is an equidigital number, since it uses as much as digits as its factorization.

64543499 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 466560, while the sum is 44.

The square root of 64543499 is about 8033.8968751161. The cubic root of 64543499 is about 401.1290994207.

It can be divided in two parts, 645 and 43499, that added together give a palindrome (44144).

The spelling of 64543499 in words is "sixty-four million, five hundred forty-three thousand, four hundred ninety-nine".