8601084661 has 4 divisors (see below), whose sum is σ = 9262706572. Its totient is φ = 7939462752.

The previous prime is 8601084659. The next prime is 8601084677. The reversal of 8601084661 is 1664801068.

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 1106892900 + 7494191761 = 33270^2 + 86569^2 .

It is not a de Polignac number, because 8601084661 - 2¹ = 8601084659 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 (8601084641) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 330810936 + ... + 330810961.

It is an arithmetic number, because the mean of its divisors is an integer number (2315676643).

Almost surely, 2^8601084661 is an apocalyptic number.

It is an amenable number.

8601084661 is a deficient number, since it is larger than the sum of its proper divisors (661621911).

8601084661 is a wasteful number, since it uses less digits than its factorization.

8601084661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 661621910.

The product of its (nonzero) digits is 55296, while the sum is 40.

The square root of 8601084661 is about 92742.0328707539. The cubic root of 8601084661 is about 2048.8857447361.

The spelling of 8601084661 in words is "eight billion, six hundred one million, eighty-four thousand, six hundred sixty-one".