808731668 has 24 divisors (see below), whose sum is σ = 1439358312. Its totient is φ = 397522944.

The previous prime is 808731661. The next prime is 808731673. The reversal of 808731668 is 866137808.

It can be written as a sum of positive squares in 4 ways, for example, as 6822544 + 801909124 = 2612^2 + 28318^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (808731661) 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, 88196 + ... + 96932.

It is an arithmetic number, because the mean of its divisors is an integer number (59973263).

Almost surely, 2^808731668 is an apocalyptic number.

It is an amenable number.

808731668 is a deficient number, since it is larger than the sum of its proper divisors (630626644).

808731668 is a wasteful number, since it uses less digits than its factorization.

808731668 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9131 (or 9129 counting only the distinct ones).

The product of its (nonzero) digits is 387072, while the sum is 47.

The square root of 808731668 is about 28438.2078900904. The cubic root of 808731668 is about 931.6829541064.

The spelling of 808731668 in words is "eight hundred eight million, seven hundred thirty-one thousand, six hundred sixty-eight".