8736961 has 4 divisors (see below), whose sum is σ = 8745300. Its totient is φ = 8728624.

The previous prime is 8736943. The next prime is 8736989. The reversal of 8736961 is 1696378.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 5550736 + 3186225 = 2356^2 + 1785^2 .

It is a cyclic number.

It is not a de Polignac number, because 8736961 - 2⁹ = 8736449 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (8736911) 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, 2326 + ... + 4783.

It is an arithmetic number, because the mean of its divisors is an integer number (2186325).

Almost surely, 2^8736961 is an apocalyptic number.

It is an amenable number.

8736961 is a deficient number, since it is larger than the sum of its proper divisors (8339).

8736961 is a wasteful number, since it uses less digits than its factorization.

8736961 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8338.

The product of its digits is 54432, while the sum is 40.

The square root of 8736961 is about 2955.8350765900. The cubic root of 8736961 is about 205.9618570784.

The spelling of 8736961 in words is "eight million, seven hundred thirty-six thousand, nine hundred sixty-one".