66674680814 has 16 divisors (see below), whose sum is σ = 114331227648. Its totient is φ = 28566919512.

The previous prime is 66674680801. The next prime is 66674680819. The reversal of 66674680814 is 41808647666.

It is a self number, because there is not a number n which added to its sum of digits gives 66674680814.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66674680819) 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, 609674 + ... + 710669.

It is an arithmetic number, because the mean of its divisors is an integer number (7145701728).

Almost surely, 2^66674680814 is an apocalyptic number.

66674680814 is a deficient number, since it is larger than the sum of its proper divisors (47656546834).

66674680814 is a wasteful number, since it uses less digits than its factorization.

66674680814 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1323959.

The product of its (nonzero) digits is 9289728, while the sum is 56.

The spelling of 66674680814 in words is "sixty-six billion, six hundred seventy-four million, six hundred eighty thousand, eight hundred fourteen".