64650443 has 24 divisors (see below), whose sum is σ = 77474880. Its totient is φ = 53470560.

The previous prime is 64650413. The next prime is 64650449. The reversal of 64650443 is 34405646.

It is not a de Polignac number, because 64650443 - 2⁶ = 64650379 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (64650449) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 154088 + ... + 154506.

It is an arithmetic number, because the mean of its divisors is an integer number (3228120).

Almost surely, 2^64650443 is an apocalyptic number.

64650443 is a deficient number, since it is larger than the sum of its proper divisors (12824437).

64650443 is a wasteful number, since it uses less digits than its factorization.

64650443 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 539 (or 526 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 32.

The square root of 64650443 is about 8040.5499190043. The cubic root of 64650443 is about 401.3505246594.

The spelling of 64650443 in words is "sixty-four million, six hundred fifty thousand, four hundred forty-three".