800740081 has 8 divisors (see below), whose sum is σ = 818181504. Its totient is φ = 783315600.

The previous prime is 800740079. The next prime is 800740091. The reversal of 800740081 is 180047008.

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

It is a cyclic number.

It is not a de Polignac number, because 800740081 - 2¹ = 800740079 is a prime.

It is a super-2 number, since 2×800740081² = 1282369354639773122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (800740021) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 156006 + ... + 161056.

It is an arithmetic number, because the mean of its divisors is an integer number (102272688).

Almost surely, 2^800740081 is an apocalyptic number.

It is an amenable number.

800740081 is a deficient number, since it is larger than the sum of its proper divisors (17441423).

800740081 is a wasteful number, since it uses less digits than its factorization.

800740081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8471.

The product of its (nonzero) digits is 1792, while the sum is 28.

The square root of 800740081 is about 28297.3511304504. The cubic root of 800740081 is about 928.6039411361.

Adding to 800740081 its reverse (180047008), we get a palindrome (980787089).

The spelling of 800740081 in words is "eight hundred million, seven hundred forty thousand, eighty-one".