66875533 has 8 divisors (see below), whose sum is σ = 68034560. Its totient is φ = 65726640.

The previous prime is 66875503. The next prime is 66875561. The reversal of 66875533 is 33557866.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-66875533 is a prime.

It is a super-3 number, since 3×66875533³ (a number of 24 digits) contains 333 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 66875533.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66875503) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11428 + ... + 16258.

It is an arithmetic number, because the mean of its divisors is an integer number (8504320).

Almost surely, 2^66875533 is an apocalyptic number.

It is an amenable number.

66875533 is a deficient number, since it is larger than the sum of its proper divisors (1159027).

66875533 is a wasteful number, since it uses less digits than its factorization.

66875533 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5067.

The product of its digits is 453600, while the sum is 43.

The square root of 66875533 is about 8177.7462054040. The cubic root of 66875533 is about 405.9031473212.

The spelling of 66875533 in words is "sixty-six million, eight hundred seventy-five thousand, five hundred thirty-three".