66808296 has 48 divisors (see below), whose sum is σ = 184017600. Its totient is φ = 21890592.

The previous prime is 66808271. The next prime is 66808303. The reversal of 66808296 is 69280866.

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 3616 + ... + 12111.

It is an arithmetic number, because the mean of its divisors is an integer number (3833700).

Almost surely, 2^66808296 is an apocalyptic number.

It is an amenable number.

66808296 is an abundant number, since it is smaller than the sum of its proper divisors (117209304).

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

66808296 is a wasteful number, since it uses less digits than its factorization.

66808296 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15798 (or 15791 counting only the distinct ones).

The product of its (nonzero) digits is 248832, while the sum is 45.

The square root of 66808296 is about 8173.6341978339. The cubic root of 66808296 is about 405.7670693457.

The spelling of 66808296 in words is "sixty-six million, eight hundred eight thousand, two hundred ninety-six".