66314766 has 64 divisors (see below), whose sum is σ = 159584256. Its totient is φ = 17989920.

The previous prime is 66314741. The next prime is 66314771. The reversal of 66314766 is 66741366.

It is a happy number.

Its product of digits (108864) is a multiple of the sum of its prime divisors (96).

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1251196 + ... + 1251248.

It is an arithmetic number, because the mean of its divisors is an integer number (2493504).

Almost surely, 2^66314766 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 66314766, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (79792128).

66314766 is an abundant number, since it is smaller than the sum of its proper divisors (93269490).

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

66314766 is an equidigital number, since it uses as much as digits as its factorization.

66314766 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 158 (or 96 counting only the distinct ones).

The product of its digits is 108864, while the sum is 39.

The square root of 66314766 is about 8143.3878699224. The cubic root of 66314766 is about 404.7654303919.

The spelling of 66314766 in words is "sixty-six million, three hundred fourteen thousand, seven hundred sixty-six".