66886386 has 16 divisors (see below), whose sum is σ = 152883264. Its totient is φ = 19110384.

The previous prime is 66886363. The next prime is 66886387. The reversal of 66886386 is 68368866.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (66886387) 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, 796225 + ... + 796308.

It is an arithmetic number, because the mean of its divisors is an integer number (9555204).

Almost surely, 2^66886386 is an apocalyptic number.

66886386 is an abundant number, since it is smaller than the sum of its proper divisors (85996878).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

66886386 is a wasteful number, since it uses less digits than its factorization.

66886386 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1592545.

The product of its digits is 1990656, while the sum is 51.

The square root of 66886386 is about 8178.4097476221. The cubic root of 66886386 is about 405.9251036750.

The spelling of 66886386 in words is "sixty-six million, eight hundred eighty-six thousand, three hundred eighty-six".