808681998 has 8 divisors (see below), whose sum is σ = 1617364008. Its totient is φ = 269560664.

The previous prime is 808681997. The next prime is 808682011. The reversal of 808681998 is 899186808.

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

808681998 is an admirable number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (808681997) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 67390161 + ... + 67390172.

It is an arithmetic number, because the mean of its divisors is an integer number (202170501).

Almost surely, 2^808681998 is an apocalyptic number.

808681998 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

808681998 is a wasteful number, since it uses less digits than its factorization.

808681998 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 134780338.

The product of its (nonzero) digits is 1990656, while the sum is 57.

The square root of 808681998 is about 28437.3345797387. The cubic root of 808681998 is about 931.6638799431.

The spelling of 808681998 in words is "eight hundred eight million, six hundred eighty-one thousand, nine hundred ninety-eight".