66366366 has 16 divisors (see below), whose sum is σ = 144799488. Its totient is φ = 20111000.

The previous prime is 66366359. The next prime is 66366367.

66366366 is nontrivially palindromic in base 10.

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66366367) 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, 502710 + ... + 502841.

It is an arithmetic number, because the mean of its divisors is an integer number (9049968).

Almost surely, 2^66366366 is an apocalyptic number.

66366366 is a gapful number since it is divisible by the number (66) formed by its first and last digit.

66366366 is an abundant number, since it is smaller than the sum of its proper divisors (78433122).

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

66366366 is a wasteful number, since it uses less digits than its factorization.

66366366 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1005567.

The product of its digits is 419904, while the sum is 42.

The square root of 66366366 is about 8146.5554684173. Note that the first 3 decimals coincide. The cubic root of 66366366 is about 404.8703868124.

The spelling of 66366366 in words is "sixty-six million, three hundred sixty-six thousand, three hundred sixty-six".