66004693 has 8 divisors (see below), whose sum is σ = 70120512. Its totient is φ = 61914816.

The previous prime is 66004669. The next prime is 66004709. The reversal of 66004693 is 39640066.

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

It is not a de Polignac number, because 66004693 - 2⁵ = 66004661 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66004093) 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, 1105 + ... + 11542.

It is an arithmetic number, because the mean of its divisors is an integer number (8765064).

Almost surely, 2^66004693 is an apocalyptic number.

It is an amenable number.

66004693 is a deficient number, since it is larger than the sum of its proper divisors (4115819).

66004693 is a wasteful number, since it uses less digits than its factorization.

66004693 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12971.

The product of its (nonzero) digits is 23328, while the sum is 34.

The square root of 66004693 is about 8124.3272336853. The cubic root of 66004693 is about 404.1335803905.

The spelling of 66004693 in words is "sixty-six million, four thousand, six hundred ninety-three".