66886084670 has 16 divisors (see below), whose sum is σ = 120416671440. Its totient is φ = 26749607424.

The previous prime is 66886084667. The next prime is 66886084709. The reversal of 66886084670 is 7648068866.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

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, 544832 + ... + 656211.

It is an arithmetic number, because the mean of its divisors is an integer number (7526041965).

Almost surely, 2^66886084670 is an apocalyptic number.

66886084670 is a deficient number, since it is larger than the sum of its proper divisors (53530586770).

66886084670 is a wasteful number, since it uses less digits than its factorization.

66886084670 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1206619.

The product of its (nonzero) digits is 18579456, while the sum is 59.

The spelling of 66886084670 in words is "sixty-six billion, eight hundred eighty-six million, eighty-four thousand, six hundred seventy".