806198401 has 4 divisors (see below), whose sum is σ = 815256900. Its totient is φ = 797139904.

The previous prime is 806198399. The next prime is 806198417. The reversal of 806198401 is 104891608.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 458002801 + 348195600 = 21401^2 + 18660^2 .

It is a cyclic number.

It is not a de Polignac number, because 806198401 - 2¹ = 806198399 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (806198441) 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, 4529116 + ... + 4529293.

It is an arithmetic number, because the mean of its divisors is an integer number (203814225).

Almost surely, 2^806198401 is an apocalyptic number.

It is an amenable number.

806198401 is a deficient number, since it is larger than the sum of its proper divisors (9058499).

806198401 is an equidigital number, since it uses as much as digits as its factorization.

806198401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9058498.

The product of its (nonzero) digits is 13824, while the sum is 37.

The square root of 806198401 is about 28393.6331067372. The cubic root of 806198401 is about 930.7091369413.

The spelling of 806198401 in words is "eight hundred six million, one hundred ninety-eight thousand, four hundred one".