8623961 has 2 divisors, whose sum is σ = 8623962. Its totient is φ = 8623960.

The previous prime is 8623939. The next prime is 8623963. The reversal of 8623961 is 1693268.

8623961 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 8497225 + 126736 = 2915^2 + 356^2 .

It is a cyclic number.

It is not a de Polignac number, because 8623961 - 2⁶ = 8623897 is a prime.

Together with 8623963, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (8623963) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4311980 + 4311981.

It is an arithmetic number, because the mean of its divisors is an integer number (4311981).

Almost surely, 2^8623961 is an apocalyptic number.

It is an amenable number.

8623961 is a deficient number, since it is larger than the sum of its proper divisors (1).

8623961 is an equidigital number, since it uses as much as digits as its factorization.

8623961 is an evil number, because the sum of its binary digits is even.

The product of its digits is 15552, while the sum is 35.

The square root of 8623961 is about 2936.6581346830. The cubic root of 8623961 is about 205.0700613196.

The spelling of 8623961 in words is "eight million, six hundred twenty-three thousand, nine hundred sixty-one".