8681798401 has 4 divisors (see below), whose sum is σ = 8845605972. Its totient is φ = 8517990832.

The previous prime is 8681798399. The next prime is 8681798441. The reversal of 8681798401 is 1048971868.

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 4342151025 + 4339647376 = 65895^2 + 65876^2 .

It is a cyclic number.

It is not a de Polignac number, because 8681798401 - 2¹ = 8681798399 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (8681798441) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 81903706 + ... + 81903811.

It is an arithmetic number, because the mean of its divisors is an integer number (2211401493).

Almost surely, 2^8681798401 is an apocalyptic number.

It is an amenable number.

8681798401 is a deficient number, since it is larger than the sum of its proper divisors (163807571).

8681798401 is a wasteful number, since it uses less digits than its factorization.

8681798401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 163807570.

The product of its (nonzero) digits is 774144, while the sum is 52.

The square root of 8681798401 is about 93176.1686323279. The cubic root of 8681798401 is about 2055.2748077822.

The spelling of 8681798401 in words is "eight billion, six hundred eighty-one million, seven hundred ninety-eight thousand, four hundred one".