64543003 has 4 divisors (see below), whose sum is σ = 73763440. Its totient is φ = 55322568.

The previous prime is 64542997. The next prime is 64543007. The reversal of 64543003 is 30034546.

It is a semiprime because it is the product of two primes.

It is a de Polignac number, because none of the positive numbers 2^k-64543003 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (64543007) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4610208 + ... + 4610221.

It is an arithmetic number, because the mean of its divisors is an integer number (18440860).

Almost surely, 2^64543003 is an apocalyptic number.

64543003 is a deficient number, since it is larger than the sum of its proper divisors (9220437).

64543003 is an equidigital number, since it uses as much as digits as its factorization.

64543003 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9220436.

The product of its (nonzero) digits is 4320, while the sum is 25.

The square root of 64543003 is about 8033.8660058530. The cubic root of 64543003 is about 401.1280718938.

Adding to 64543003 its reverse (30034546), we get a palindrome (94577549).

The spelling of 64543003 in words is "sixty-four million, five hundred forty-three thousand, three".