66886682 has 4 divisors (see below), whose sum is σ = 100330026. Its totient is φ = 33443340.

The previous prime is 66886681. The next prime is 66886723. The reversal of 66886682 is 28668866.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 59274601 + 7612081 = 7699^2 + 2759^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 66886682.

It is not an unprimeable number, because it can be changed into a prime (66886681) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16721669 + ... + 16721672.

Almost surely, 2^66886682 is an apocalyptic number.

66886682 is a deficient number, since it is larger than the sum of its proper divisors (33443344).

66886682 is a wasteful number, since it uses less digits than its factorization.

66886682 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33443343.

The product of its digits is 1327104, while the sum is 50.

The square root of 66886682 is about 8178.4278440297. The cubic root of 66886682 is about 405.9257024697.

The spelling of 66886682 in words is "sixty-six million, eight hundred eighty-six thousand, six hundred eighty-two".