64532443 has 4 divisors (see below), whose sum is σ = 64783800. Its totient is φ = 64281088.

The previous prime is 64532437. The next prime is 64532491. The reversal of 64532443 is 34423546.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 34423546 = 2 ⋅17211773.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-64532443 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (64532423) 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, 125293 + ... + 125806.

It is an arithmetic number, because the mean of its divisors is an integer number (16195950).

Almost surely, 2^64532443 is an apocalyptic number.

64532443 is a deficient number, since it is larger than the sum of its proper divisors (251357).

64532443 is a wasteful number, since it uses less digits than its factorization.

64532443 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 251356.

The product of its digits is 34560, while the sum is 31.

The square root of 64532443 is about 8033.2087611365. The cubic root of 64532443 is about 401.1061942656.

Adding to 64532443 its reverse (34423546), we get a palindrome (98955989).

The spelling of 64532443 in words is "sixty-four million, five hundred thirty-two thousand, four hundred forty-three".