66510093 has 8 divisors (see below), whose sum is σ = 95501728. Its totient is φ = 40929264.

The previous prime is 66510061. The next prime is 66510107. The reversal of 66510093 is 39001566.

It is a happy number.

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

It is not a de Polignac number, because 66510093 - 2⁵ = 66510061 is a prime.

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 66510093.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66512093) 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, 852655 + ... + 852732.

It is an arithmetic number, because the mean of its divisors is an integer number (11937716).

Almost surely, 2^66510093 is an apocalyptic number.

It is an amenable number.

66510093 is a deficient number, since it is larger than the sum of its proper divisors (28991635).

66510093 is a wasteful number, since it uses less digits than its factorization.

66510093 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1705403.

The product of its (nonzero) digits is 4860, while the sum is 30.

The square root of 66510093 is about 8155.3720332061. The cubic root of 66510093 is about 405.1624466457.

The spelling of 66510093 in words is "sixty-six million, five hundred ten thousand, ninety-three".