8606191961 has 8 divisors (see below), whose sum is σ = 8831950344. Its totient is φ = 8381188480.

The previous prime is 8606191889. The next prime is 8606191969. The reversal of 8606191961 is 1691916068.

It can be written as a sum of positive squares in 4 ways, for example, as 200052736 + 8406139225 = 14144^2 + 91685^2 .

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 8606191961 - 2²⁶ = 8539083097 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (8606191969) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 165590 + ... + 211263.

It is an arithmetic number, because the mean of its divisors is an integer number (1103993793).

Almost surely, 2^8606191961 is an apocalyptic number.

It is an amenable number.

8606191961 is a deficient number, since it is larger than the sum of its proper divisors (225758383).

8606191961 is a wasteful number, since it uses less digits than its factorization.

8606191961 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 377451.

The product of its (nonzero) digits is 139968, while the sum is 47.

The square root of 8606191961 is about 92769.5637642002. The cubic root of 8606191961 is about 2049.2912053665.

The spelling of 8606191961 in words is "eight billion, six hundred six million, one hundred ninety-one thousand, nine hundred sixty-one".