9861670559 has 8 divisors (see below), whose sum is σ = 10633207872. Its totient is φ = 9091982880.

The previous prime is 9861670549. The next prime is 9861670561. The reversal of 9861670559 is 9550761689.

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 9861670559 - 2²⁰ = 9860621983 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9861670549) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 451319 + ... + 472664.

It is an arithmetic number, because the mean of its divisors is an integer number (1329150984).

Almost surely, 2^9861670559 is an apocalyptic number.

9861670559 is a deficient number, since it is larger than the sum of its proper divisors (771537313).

9861670559 is a wasteful number, since it uses less digits than its factorization.

9861670559 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 924817.

The product of its (nonzero) digits is 4082400, while the sum is 56.

The square root of 9861670559 is about 99305.9442279263. The cubic root of 9861670559 is about 2144.4544707677.

The spelling of 9861670559 in words is "nine billion, eight hundred sixty-one million, six hundred seventy thousand, five hundred fifty-nine".