66528443 has 8 divisors (see below), whose sum is σ = 73075200. Its totient is φ = 60286248.

The previous prime is 66528431. The next prime is 66528461. The reversal of 66528443 is 34482566.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 66528443 - 2⁶ = 66528379 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 66528397 and 66528406.

It is not an unprimeable number, because it can be changed into a prime (66528403) 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 7 ways as a sum of consecutive naturals, for example, 75683 + ... + 76556.

It is an arithmetic number, because the mean of its divisors is an integer number (9134400).

Almost surely, 2^66528443 is an apocalyptic number.

66528443 is a deficient number, since it is larger than the sum of its proper divisors (6546757).

66528443 is a wasteful number, since it uses less digits than its factorization.

66528443 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 152281.

The product of its digits is 138240, while the sum is 38.

The square root of 66528443 is about 8156.4969809349. The cubic root of 66528443 is about 405.1997043857.

The spelling of 66528443 in words is "sixty-six million, five hundred twenty-eight thousand, four hundred forty-three".