66690654933 has 8 divisors (see below), whose sum is σ = 101623855168. Its totient is φ = 38108945664.

The previous prime is 66690654923. The next prime is 66690654967. The reversal of 66690654933 is 33945609666.

It is a happy number.

66690654933 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 66690654933 - 2¹⁴ = 66690638549 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 (66690654923) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1587872716 + ... + 1587872757.

It is an arithmetic number, because the mean of its divisors is an integer number (12702981896).

Almost surely, 2^66690654933 is an apocalyptic number.

It is an amenable number.

66690654933 is a deficient number, since it is larger than the sum of its proper divisors (34933200235).

66690654933 is a wasteful number, since it uses less digits than its factorization.

66690654933 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3175745483.

The product of its (nonzero) digits is 18895680, while the sum is 57.

The spelling of 66690654933 in words is "sixty-six billion, six hundred ninety million, six hundred fifty-four thousand, nine hundred thirty-three".