66024643 has 6 divisors (see below), whose sum is σ = 66383772. Its totient is φ = 65667420.

The previous prime is 66024611. The next prime is 66024653. The reversal of 66024643 is 34642066.

It is not a de Polignac number, because 66024643 - 2⁵ = 66024611 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (66024653) 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 5 ways as a sum of consecutive naturals, for example, 43780 + ... + 45262.

It is an arithmetic number, because the mean of its divisors is an integer number (11063962).

Almost surely, 2^66024643 is an apocalyptic number.

66024643 is a deficient number, since it is larger than the sum of its proper divisors (359129).

66024643 is an equidigital number, since it uses as much as digits as its factorization.

66024643 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1905 (or 1694 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 31.

The square root of 66024643 is about 8125.5549348952. The cubic root of 66024643 is about 404.1742929136.

The spelling of 66024643 in words is "sixty-six million, twenty-four thousand, six hundred forty-three".