8461205887 has 4 divisors (see below), whose sum is σ = 8468159616. Its totient is φ = 8454252160.

The previous prime is 8461205849. The next prime is 8461205897. The reversal of 8461205887 is 7885021648.

8461205887 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is not a de Polignac number, because 8461205887 - 2¹⁹ = 8460681599 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 8461205887.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8461205807) 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, 3475039 + ... + 3477472.

It is an arithmetic number, because the mean of its divisors is an integer number (2117039904).

Almost surely, 2^8461205887 is an apocalyptic number.

8461205887 is a deficient number, since it is larger than the sum of its proper divisors (6953729).

8461205887 is a wasteful number, since it uses less digits than its factorization.

8461205887 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6953728.

The product of its (nonzero) digits is 860160, while the sum is 49.

The square root of 8461205887 is about 91984.8133498133. The cubic root of 8461205887 is about 2037.7180274898.

The spelling of 8461205887 in words is "eight billion, four hundred sixty-one million, two hundred five thousand, eight hundred eighty-seven".