66696383 has 8 divisors (see below), whose sum is σ = 72109968. Its totient is φ = 61323264.

The previous prime is 66696367. The next prime is 66696451. The reversal of 66696383 is 38369666.

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

It is a cyclic number.

It is not a de Polignac number, because 66696383 - 2⁴ = 66696367 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 (66696353) 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, 6641 + ... + 13322.

It is an arithmetic number, because the mean of its divisors is an integer number (9013746).

Almost surely, 2^66696383 is an apocalyptic number.

66696383 is a deficient number, since it is larger than the sum of its proper divisors (5413585).

66696383 is a wasteful number, since it uses less digits than its factorization.

66696383 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20233.

The product of its digits is 839808, while the sum is 47.

The square root of 66696383 is about 8166.7853528791. The cubic root of 66696383 is about 405.5403710028.

The spelling of 66696383 in words is "sixty-six million, six hundred ninety-six thousand, three hundred eighty-three".