8198561 has 8 divisors (see below), whose sum is σ = 9693120. Its totient is φ = 6784848.

The previous prime is 8198551. The next prime is 8198587. The reversal of 8198561 is 1658918.

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

It is not a de Polignac number, because 8198561 - 2¹⁰ = 8197537 is a prime.

It is a super-3 number, since 3×8198561³ (a number of 22 digits) contains 333 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (8198501) 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, 19991 + ... + 20396.

It is an arithmetic number, because the mean of its divisors is an integer number (1211640).

Almost surely, 2^8198561 is an apocalyptic number.

It is an amenable number.

8198561 is a deficient number, since it is larger than the sum of its proper divisors (1494559).

8198561 is a wasteful number, since it uses less digits than its factorization.

8198561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40423.

The product of its digits is 17280, while the sum is 38.

The square root of 8198561 is about 2863.3129413321. The cubic root of 8198561 is about 201.6411709529.

The spelling of 8198561 in words is "eight million, one hundred ninety-eight thousand, five hundred sixty-one".