66204093 has 16 divisors (see below), whose sum is σ = 90569600. Its totient is φ = 43001280.

The previous prime is 66204079. The next prime is 66204109. The reversal of 66204093 is 39040266.

It is not a de Polignac number, because 66204093 - 2⁶ = 66204029 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 66204093.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66204043) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 18288 + ... + 21606.

It is an arithmetic number, because the mean of its divisors is an integer number (5660600).

Almost surely, 2^66204093 is an apocalyptic number.

It is an amenable number.

66204093 is a deficient number, since it is larger than the sum of its proper divisors (24365507).

66204093 is a wasteful number, since it uses less digits than its factorization.

66204093 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3492.

The product of its (nonzero) digits is 7776, while the sum is 30.

The square root of 66204093 is about 8136.5897647602. The cubic root of 66204093 is about 404.5401334194.

The spelling of 66204093 in words is "sixty-six million, two hundred four thousand, ninety-three".