66984349 has 8 divisors (see below), whose sum is σ = 70025472. Its totient is φ = 63954000.

The previous prime is 66984347. The next prime is 66984371. The reversal of 66984349 is 94348966.

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 66984349 - 2¹ = 66984347 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 (66984343) 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, 11724 + ... + 16474.

It is an arithmetic number, because the mean of its divisors is an integer number (8753184).

Almost surely, 2^66984349 is an apocalyptic number.

It is an amenable number.

66984349 is a deficient number, since it is larger than the sum of its proper divisors (3041123).

66984349 is a wasteful number, since it uses less digits than its factorization.

66984349 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5387.

The product of its digits is 1119744, while the sum is 49.

The square root of 66984349 is about 8184.3966790473. The cubic root of 66984349 is about 406.1231820646.

The spelling of 66984349 in words is "sixty-six million, nine hundred eighty-four thousand, three hundred forty-nine".