66328299 has 12 divisors (see below), whose sum is σ = 96002400. Its totient is φ = 44128944.

The previous prime is 66328291. The next prime is 66328319. The reversal of 66328299 is 99282366.

66328299 is a `hidden beast` number, since 6 + 632 + 8 + 2 + 9 + 9 = 666.

It is not a de Polignac number, because 66328299 - 2³ = 66328291 is a prime.

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (66328291) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2659 + ... + 11820.

It is an arithmetic number, because the mean of its divisors is an integer number (8000200).

Almost surely, 2^66328299 is an apocalyptic number.

66328299 is a deficient number, since it is larger than the sum of its proper divisors (29674101).

66328299 is a wasteful number, since it uses less digits than its factorization.

66328299 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14994 (or 14991 counting only the distinct ones).

The product of its digits is 279936, while the sum is 45.

The square root of 66328299 is about 8144.2187470622. The cubic root of 66328299 is about 404.7929623094.

The spelling of 66328299 in words is "sixty-six million, three hundred twenty-eight thousand, two hundred ninety-nine".