801221306 has 8 divisors (see below), whose sum is σ = 1203619764. Its totient is φ = 400014720.

The previous prime is 801221293. The next prime is 801221321. The reversal of 801221306 is 603122108.

It can be written as a sum of positive squares in 2 ways, for example, as 797554081 + 3667225 = 28241^2 + 1915^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a Curzon number.

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 3 ways as a sum of consecutive naturals, for example, 296285 + ... + 298976.

Almost surely, 2^801221306 is an apocalyptic number.

801221306 is a deficient number, since it is larger than the sum of its proper divisors (402398458).

801221306 is a wasteful number, since it uses less digits than its factorization.

801221306 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 595936.

The product of its (nonzero) digits is 576, while the sum is 23.

The square root of 801221306 is about 28305.8528576689. The cubic root of 801221306 is about 928.7899265568.

The spelling of 801221306 in words is "eight hundred one million, two hundred twenty-one thousand, three hundred six".