808730905 has 8 divisors (see below), whose sum is σ = 970710984. Its totient is φ = 646828800.

The previous prime is 808730893. The next prime is 808730911. The reversal of 808730905 is 509037808.

It can be written as a sum of positive squares in 4 ways, for example, as 337493641 + 471237264 = 18371^2 + 21708^2 .

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

It is not a de Polignac number, because 808730905 - 2¹¹ = 808728857 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6475 + ... + 40735.

It is an arithmetic number, because the mean of its divisors is an integer number (121338873).

Almost surely, 2^808730905 is an apocalyptic number.

It is an amenable number.

808730905 is a deficient number, since it is larger than the sum of its proper divisors (161980079).

808730905 is a wasteful number, since it uses less digits than its factorization.

808730905 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38987.

The product of its (nonzero) digits is 60480, while the sum is 40.

The square root of 808730905 is about 28438.1944750366. The cubic root of 808730905 is about 931.6826611068.

The spelling of 808730905 in words is "eight hundred eight million, seven hundred thirty thousand, nine hundred five".