66565093 has 8 divisors (see below), whose sum is σ = 76306880. Its totient is φ = 56881440.

The previous prime is 66565069. The next prime is 66565097. The reversal of 66565093 is 39056566.

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

It is not a de Polignac number, because 66565093 - 2⁵ = 66565061 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66565097) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12048 + ... + 16681.

It is an arithmetic number, because the mean of its divisors is an integer number (9538360).

Almost surely, 2^66565093 is an apocalyptic number.

It is an amenable number.

66565093 is a deficient number, since it is larger than the sum of its proper divisors (9741787).

66565093 is a wasteful number, since it uses less digits than its factorization.

66565093 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29067.

The product of its (nonzero) digits is 145800, while the sum is 40.

The square root of 66565093 is about 8158.7433468641. The cubic root of 66565093 is about 405.2740978447.

The spelling of 66565093 in words is "sixty-six million, five hundred sixty-five thousand, ninety-three".