163320266 has 4 divisors (see below), whose sum is σ = 244980402. Its totient is φ = 81660132.

The previous prime is 163320247. The next prime is 163320271. The reversal of 163320266 is 662023361.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 153239641 + 10080625 = 12379^2 + 3175^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 40830065 + ... + 40830068.

Almost surely, 2^163320266 is an apocalyptic number.

163320266 is a deficient number, since it is larger than the sum of its proper divisors (81660136).

163320266 is an equidigital number, since it uses as much as digits as its factorization.

163320266 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 81660135.

The product of its (nonzero) digits is 7776, while the sum is 29.

The square root of 163320266 is about 12779.6817644259. The cubic root of 163320266 is about 546.6130880631.

The spelling of 163320266 in words is "one hundred sixty-three million, three hundred twenty thousand, two hundred sixty-six".