808198561 has 8 divisors (see below), whose sum is σ = 813507200. Its totient is φ = 802906560.

The previous prime is 808198529. The next prime is 808198583. The reversal of 808198561 is 165891808.

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 808198561 - 2⁵ = 808198529 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (808198591) 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, 101980 + ... + 109618.

It is an arithmetic number, because the mean of its divisors is an integer number (101688400).

Almost surely, 2^808198561 is an apocalyptic number.

It is an amenable number.

808198561 is a deficient number, since it is larger than the sum of its proper divisors (5308639).

808198561 is a wasteful number, since it uses less digits than its factorization.

808198561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8319.

The product of its (nonzero) digits is 138240, while the sum is 46.

The square root of 808198561 is about 28428.8332683563. The cubic root of 808198561 is about 931.4781907298.

The spelling of 808198561 in words is "eight hundred eight million, one hundred ninety-eight thousand, five hundred sixty-one".