64493443 has 4 divisors (see below), whose sum is σ = 73706800. Its totient is φ = 55280088.

The previous prime is 64493441. The next prime is 64493483. The reversal of 64493443 is 34439446.

64493443 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is not a de Polignac number, because 64493443 - 2¹ = 64493441 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (64493441) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4606668 + ... + 4606681.

It is an arithmetic number, because the mean of its divisors is an integer number (18426700).

Almost surely, 2^64493443 is an apocalyptic number.

64493443 is a deficient number, since it is larger than the sum of its proper divisors (9213357).

64493443 is an equidigital number, since it uses as much as digits as its factorization.

64493443 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9213356.

The product of its digits is 124416, while the sum is 37.

The square root of 64493443 is about 8030.7809707400. The cubic root of 64493443 is about 401.0253755166.

The spelling of 64493443 in words is "sixty-four million, four hundred ninety-three thousand, four hundred forty-three".